While it may seem like a phrase that you would use in casual conversation, it can be so much more than that. Here's what "ISTG" means and how you can use it in your next text exchange. The term is primarily used to emphasize a point you’re making and can reiterate anger or annoyance. Avoid using this abbreviation in business or professional settings because it is so casual. Usually, students or the young generation use this acronym. Usage: “Oh nice, you finally finished it! Welcome to the club B)” What does BB mean?What Does ISTG Mean in Texts or on Social Media? ISTG means “I swear to God” in text messages and on social media platforms like TikTok, Snapchat, Twitter, Instagram, and more. "Meaning; ISTG: I Swear to God: ISTG: Immigrant Ships Transcribers Guild: ISTG: Information Storage Technology Group (University of Twente; Netherlands) ISTG: Inter-Site Topology Generator: ISTG: Implicit State Transition Graph: ISTG: Integrated Systems Tech Group (Tampa, FL) ISTG: Innovative Science and Technology Group (est. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. I’m beyond shocked. ETA meaning: estimated time of arrival. Clear Of Patient Diagnosis B. What Does ISTG Mean? In internet chatting and text messaging, the acronym “istg” actually means the phrase “I swear to God. I swear to God. It’s used to convey a deep sense of seriousness about a situation or to emphasize a point being made. Promise. Simply put, “ISTG” stands for “ I swear to God . In contrast to standard text or audio messaging apps, Snapchat offers the unique ability to share fleeting live video messages that vanish as soon as they are. ISTFG means “I Swear To Fing God” and is typically used in informal texting to express frustration or disbelief. Going deeper into its meaning, ISTG sounds quite similar to OMG ‘Oh My God!’. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. ISTG stands for I Swear To God. 4. It is an acronym used to emphasize a belief in or commitment to the truth of a statement. Istfg Meaning Is: Istfg stands for “I Swear to Fucking God. Jamie Grill / Getty. ISTG is often used in informal conversations, texting, and on social media platforms. ”. "I swear to. This is a common acronym that is used online, typically in text-based communication. ISTG is an acronym that means I swear to God. It stands for “I swear to God. Today, I'll walk you through what ISTG means in text and other text. “I swear to God” is a common phrase that people use to show that they are telling the truth or to express their sincerity. Get all the news you need in your inbox each morning. ” It is commonly used in text messaging and online chat to emphasize the truth or sincerity of a statement. ”. Alternatively, you might say ISTG to show exasperation or frustration at something someone is telling you. Today, I'll walk you through what ISTG means in text. Read Also: What does CFS mean on Instagram? Common Uses for ISTG . 2. It can be used to convey extreme seriousness, exasperation, or surprise, and is usually used outside of a serious religious. Gunna explained that the ‘P’ stands for ‘player,’ although it can also stand for. It may sound like a new term to some, but this one is very familiar to social media users. It's a close relative of the OMG (Oh My God). I swear to fucking god. ISTG=Make a PromiseWhat Is ISTG Meaning in SlangIstg Slang Usage (Examples and Use Cases)ISTG Meaning on TikTokISTG Meaning SnapchatFAQs on ISTG Meaning1. What does ISTG mean? ISTG means “I Swear To God”. One of the known acronyms is “ISTG” or “istg”. ”. It could be used to show how excited they are or to express. It can also be used as an expression of sincerity, such as when a user is making a promise or expressing their. Likewise, if you have ever seen the text code "ISTG" in texting and wondered what does ISTG mean in text. It is very similar to ISTFG meaning, however, there are additional letters added within the acronym. ISTG stands for "I Swear to God. Chronic Obstructive Pulmonary Disease D. For example, if someone decides to message you with insulting comments about your hair, then you might reply with "STFU. It’s also like STG. ISTJ types like to have clear goals and realistic deadlines, and to work with factual data to solve problems and monitor progress. ”. Likewise, if you have ever seen the text code "ISTG" in texting and wondered what does ISTG mean in text. ISTG meaning is “I Swear To God” and is one of the most widely used acronyms in the English language. While the presence of the word “God” might indicate some religious connotation, it’s not a religious term at all. Since this is a very casual acronym, avoid using it in. What Does ISTG Mean? Introduction. ISTFG. Definition of ISTG in Slang/Internet Slang. “ISTG” stands for “I swear to God,” and it’s commonly used in texting to express the seriousness of a situation or to assure someone that you’re not joking when. ISTG is an acronym used for “I Swear To God. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. When someone uses ISTG, they are essentially emphasizing. Pushin P is a popular phrase in the Bay Area and Texas that was popularized by Atlanta rapper Gunna. What Does ISTG Mean In Texting? ISTG is an acronym used for “I Swear To God. It is commonly. This initialism should be avoided in professional situations or in conversing with someone who is religious. Meaning. 3. 1 definitions of ISTG. It’s also like STG. Further Reading: What Does NFS Mean: Here Is All-inclusive Information You Need to Know. ISTFG. ISTFG. Usually, students or the young generation use this acronym. By using “ISTG,” individuals can emphasize the sincerity or truthfulness of their statements, especially when sharing surprising facts or. So, if you ever heard OMG (O My God), another popular acronym, ISTG won’t surprise you anymore. new search. It is commonly used in text messaging to express the seriousness of a situation or to assure that a statement is not a joke. ISTG is an internet slang initialism that conveys earnestness, annoyance, or surprise. In simple terms, “istg” stands for “I swear to God,” a popular expression used to emphasize the truthfulness or intensity of a statement. ISTG. While some text codes (like brb, lol, and omg) are simple ones that parents can understand, it can be difficult for parents to understand many codes teenagers use nowadays. ISTG is short for "I swear to God. It is typically used to show appreciation of an act of kindness by a loved one. Origin of ISTG. What Does ISTG Mean In Texting? Snapchat represents a real-time multimedia communication platform that takes a step beyond traditional messaging applications. It is very similar to ISTFG meaning, however, there are additional letters added within the acronym. What Does “ISTG” Stand For? “ISTG” is an acronym that stands for “I Swear to God. ATP meaning: answer the phone. Use ISTG to show you’re not joking about something, or to express annoyance or frustration with something (or someone). It comes from the courtroom oath that traditionally said, “i swear by almighty god that the evidence i shall give shall be the truth, the whole truth, and nothing but the truth. Start the day smarter. The media could not be loaded, either because the server or network failed or because the format is not supported. What Does ISTG Mean? In internet chatting and text messaging, the acronym “istg” actually means the phrase “I swear to God. I swear to fucking god. You can use it to show your deep frustration, attest to the truth of something, or underline your beliefs. ISTG is an acronym used in texting, which stands for “I swear to God. Some of these words and acronyms are used on other video games and social media platforms too. For example, they might say “ISTG this homework sucks. It is commonly used as an exclamation or interjection. '. Throughout the years, a variety of terms have arisen which make it easier to communicate online. In summary, ISTG is an acronym widely used in informal online communication. It can be a powerful tool for self-motivation and encouragement. It can be used to convey sincerity, make promises, express annoyance, and more. IYKYK meaning: if you know, you know. ISTG is simply an acronym that means I swear to God. How Is ISTG Used? Use Cases & Examples. ABC – This doesn’t stand for anything. It's not typically used in a religious context. Here’s what this multifaceted slang term means and how you may. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. This is also very similar to. This phrase has a couple of variants, S2G and ISTG, and is frequently used in texting or on social media. ILYSM means "I Love You So Much. It can be used as an exclamation, where users are expressing disbelief or shock. This phrase can be used to swear truthfully without having to use a more serious swear word, such as the word "God". What does OTP mean in texting? “OTP” means “one true pair/pairing,” according to Merriam-Webster. 2. I Swear to God. This acronym often highlights the sincerity, seriousness, or exasperation of the person using it. Key Takeaways: ‘ISTG’ stands for “I Swear To God” and is commonly used in text messages and online chat. This phrase should only be used in casual conversation. ”. ISTG means I swear to God. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. Start the day smarter. Social media platforms: Snapchat, Instagram, Twitter, TikTok, and more. What Does Istg Mean In Text? I swear to God ISTG means “I swear to God. Specifically, as internet usage is increasing daily, people. While the presence of the word “God” might indicate some religious connotation, it’s not a religious term at all. Further Reading: What Does NFS Mean: Here Is All-inclusive Information You Need to Know. You will find information about the origin and other possible meanings in all types of information on this acronym, including its. ISTG. ”. What Does ISTG Mean in Texts or on Social Media? ISTG means “I swear to God” in text messages and on social media platforms like TikTok, Snapchat, Twitter, Instagram, and more. If you see someone using ISTG when texting, they’re probably emphasizing how serious they are about something. It can be used to express emotions, surprise, or sudden kind of feelings. There needs to be a TikTok user manual that includes a glossary because new abbreviations and slang words are constantly being churned out and I, a millennial, cannot keep up. Summary: · The added I at the beginning just refers to the person that is saying this, so ISTG means “I Swear To God”. The phrase “so what” is often used to express indifference or dismissiveness about the topic at hand. This phrase is typically employed to express surprise, disbelief or concern over a given situation. showing only Slang/Internet Slang definitions ( show all 7 definitions) Note: We have 1 other definition for ISTG in our Acronym Attic. ISTG and OMG can also be used interchangeably often. What does istg mean in text. This is a casual phrase that many people use both online and in real life (imagine someone exclaiming “I swear to God!” when they’re frustrated or emphasizing a point). suggest new definition. This abbreviation is typically used to express surprise, confusion, disbelief, or. B) used to be the symbol of a person wearing sunglasses with a smile on his face. Matching search results: Since the STG meaning is often expressed fully when in a verbal conversation, the term STG should only be used in casual conversations via text or on social media. It’s often used as an exclamation or a way to emphasize something and can be written in lower or upper case letters. ISTG stands for “I swear to God” and is often used on Snapchat to emphasize a point or express strong emotion. ” It is often used to emphasise the truthfulness of a statement or convey the seriousness of a situation. The phrase “I swear to God” has been used for hundreds of years and is basically taken from the Old English word “swear” which means an oath. " The abbreviation ILYSM is used with the meaning "I Love You So Much" as an expression of affection. ”. The ISTG acronym is commonly used in response to a person who doubts something that you said. ISTG is an abbreviation commonly used in text messaging and online communication, particularly among younger generations. What Does ISTG Mean? ISTG is an acronym that stands for “I Swear to God”. Whenever a TikTok user opens their app, they are directed to their For You Page, which is a stream of videos that TikTok thinks that user will like. STFG stands for Super Teacher Friends Group. ONB is an abbreviation commonly used in texting, which stands for “Oh No Baby”. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness. It’s a direct and sometimes blunt way of communicating that the information just shared doesn’t impress, affect, or matter to the person asking “so what. ISTG is used to express frustration or annoyance at something or to show emphasis on a statement. TLDR meaning: too long; didn't read. A very dramatic phrase to be used only in exceptional circumstances. ’. HMU meaning: hit me up. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. STG: You can swear to god when you are frustrated or in exacerbation. It is often used in informal conversations, especially when expressing frustration or disbelief. This abbreviation is commonly used in informal conversations on various digital platforms, such as text messages, social media posts, and online forums. ISTG Meaning. HMU meaning: hit. The phrase was later. ISTFG means “I Swear To Fing God,” a phrase used to emphasize sincerity or seriousness when making a statement. You might learn your child is using this slang term by chance when a text pops up on the phone screen. ISTG is an acronym that stands for “I Swear To God”. ISTG Meaning= Threat Use Cases & Examples. What does STG mean?U Jelly is often used to goad someone online or in-person because you possess an article that they do not have, or because you have attained some kind of gamer achievement or minor online fame. suggest new definition. What does ISTG mean in the text? Ans. It is commonly employed in informal chats, videos, and posts to show seriousness and truthfulness. In conclusion, “ISTG” is an acronym that stands for “I swear to God. "I swear to God" isn't just texting slang – it's used in everyday conversations to emphasize the truth at hand. Its meaning is “I Swear To God,” and it is commonly used to add sincerity or emphasis to a statement. This should not be used in any formal setting, no matter how informal it may seem, via social media or text. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. It is used to express frustration, anger, or disbelief. ” This abbreviation is commonly used in informal conversations on various digital. By swearing to God, you make a sacred oath that most people respect more and therefore, are more. Also, Check What Does SNM Mean In Texting? What Does ISTG Mean and How Is It Used in Real Context? The use of shortened phrases is a popular way to communicate in text messages and online conversations. ISTG Meaning= ThreatUse Cases & Examples. One of the main uses of ISTG is in text messages or chats, either between friends or in a. This phrase is often used to express frustration or exasperation with a situation or to emphasize the sincerity of a statement. IYKYK meaning: if you know, you know. This expression is most likely something you've heard in ordinary conversation. You’ll find it all over the internet, from social media platforms like twitter and instagram to direct messages between friends. The term comes from “shipping” within fandom culture. Person1: I'm so exhausted. . This phrase is often used on social media while making public posts or in private chats. OFC meaning: of course. Overall, the acronym STG stands for “swear to God. . U Jelly has become a very popular expression, and because of its viral spreading nature, it has achieved meme status. A. It represents an empathetic or mildly shocked response to unexpected news or events. When someone doubts something you said, using ISTG is a way to make a solemn oath that most people respect and are more likely to believe. ISTG stands for “I swear to God. FYP means For You Page. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. FOMO meaning: the fear of missing out. STFU is an acronym that means "shut the fuck up. Complaint Of Patient Data C. It can be used to convey extreme seriousness, exasperation, or surprise, and is usually used outside of a serious religious context. "I swear to. ISTG Unveiled: Introduction to the Slang. Like, "ISTG, if I get one more. What Does “ISTG” Stand For? “ISTG” is an acronym that stands for “I Swear to God. It can be written in both lowercase “istg” and capital “ISTG” letters. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. Specifically, as internet usage is increasing daily,. Sub the Gamer security threat group. It is used to emphasize a statement, a promise, or a claim, to express frustration, or to make a solemn vow. ISTG Meaning= Honesty or Certainty2. ”. In summary, ISTG is an acronym widely used in informal online communication. Its meaning is “I Swear To God,” and it is commonly used to add sincerity or emphasis to a statement. ISTG stands for: I Swear To God. LFG meaning: let's freaking go. Pinky promise. GTFO can be used to express disbelief or displeasure. TikTok lingo is hard to keep up with. The abbreviation ISTG is widely used in text messaging and online chat with the meaning "I Swear To God. This expression is used to emphasize the truthfulness or seriousness of a statement. ISTFG, if you don’t stop playing your music so loudly, I’m going to lose it. Essentially, ISTG is a shortcut way of saying "I. ISTG is simply an acronym that means I swear to God. " “ISTG” meaning over text message. Prison gang. Testify. – What does istg Mean in Text – ISTG is a popular online abbreviation among today’s youth. More violent then just I Swear To GodISTG is an acronym that is short for “I swear to God”. The abbreviation “ISTG” is a shorthand. "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're. This initialism should be avoided in professional situations or in conversing with someone who is religious. What does ISTFG mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: ISTFG. This phrase is used to emphasize the truth of a statement or assertion. While some text codes (like brb, lol, and omg) are simple ones that parents can understand, it can be difficult for parents to understand many codes teenagers use nowadays. Similar to “I Swear To Fucking God” istfg, in that it is an escalation of the original term “I Swear To God” istg. ISTG can be used in various contexts and can have different implications depending on the conversation. Correct: ISTG Correct: istg Incorrect: iSTG Usage Use of the abbreviation can be found in the following places. Annoyance and Assurance Another ISTG How to Use ISTG One of the hottest internet acronyms among today's teenagers is ISTG. Guarantee. It’s a widely used acronym in text messaging and online chatting on social networking sites. What Does Istg Mean? The acronym ISTG stands for “I swear to God. This can be seen in phrases like: “ISTG, I’m always here for you” or “ISTG, I’ll never forget what you did for me”. The abbreviation ISTG is widely used in text messaging and online chat with the meaning "I Swear To God. ETA meaning: estimated time of arrival. However, as with many other abbreviations meaning "I love you," it should not. Definition of ISTG in Slang/Internet Slang. I swear to f**king god (ISTFG) is an abbreviation used to express exasperation, disbelief, or agreement. The”I” is the person who is saying it, while”F” is an expletive “F” can be an exclamation point added to the expression. It can be used to express emotions, surprise, or sudden kind of feelings. Chronic Osteomyelitis Pathology Degree Embed Share an image of ISTFG » Click to view: Hearing impaired tip:. ”. This initialism should be avoided in professional situations or in conversing with someone who is religious. The ISTG definition includes a short acronym for a phrase that reads as ‘I Swear To God’. What does LFG ð mean? LFG as “let’s freaking go” has since become widespread in texts among friends as a way to excite or “hype up” one another about a particular event or situation. It’s an acronym that people use to express the seriousness of a situation or to emphasize that they are not joking. One such popular slang on platforms like Snapchat is ‘ISTG’. ” Origin of ISTG. What does B) mean? Back when emojis weren’t a thing, ‘emoticons’ were used to add more emotions to the text. ”. ISTG Meaning= Threat3. The”I” is the person who is saying it, while”F” is an expletive “F” can be an exclamation point added to the expression. The “baby” part of the phrase isn’t a literal reference to a child, and. Even though the phrase includes “God,” its meaning and uses aren’t considered religious. It can often. The acronym ISTG is commonly used in text. ISTG stands for “I swear to God” in texts and on social media apps. Use Cases & Examples. ”. ABC means asking another player (or telling another player you’re ready) to make an offer, trade or perform a task in Roblox, such as roleplaying in a game. For example: What does ISTG mean? ISTG is an acronym that means I swear to God. 1 definitions of ISTG. STG means different things to different people but its most common meaning is ‘Swear To God’. For example, three sample text messages using the abbreviation ISTFG could be: 1. It is a commonly used slang expression used to emphasize that someone is telling the truth, or to add emphasis to a statement. Use ISTG to show you’re not joking about something, or to express annoyance or frustration with something (or someone). 查看翻译. ISTG Meaning. It’s similar to the term ‘ONG. The phrase originated as a method for people to express a greater level of certainty about a statement they’re making in a conversation. Let’s talk about the other meanings of this common abbreviation and find out what it means for different people in different contexts. The expression “I swear to God” is used for centuries and originates directly from the Old English word “swear” which means swearing. It is an expression used to emphasize the truthfulness or sincerity of a statement. ” Origin of ISTG. Capitalization The slang term and abbreviation “ISTG” is typically spelled in ALL CAPS or all lowercase letters. It is used to emphasize a statement, a promise, or a claim, to express frustration, or to make a solemn vow. In texting lingo, “istg” simply stands for “I Swear To God”. " It is an internet acronym used in online chat to express frustration, surprise, or vehement assertion. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. They are there for each other on the good days and the bad days. ISTG can be used to express extreme seriousness, anger, or surprise, and is usually used outside of serious religious contexts. Get all the news you need in your inbox each morning. Abbreviation of I Swear To Mother Fucking God. showing only Slang/Internet Slang definitions ( show all 7 definitions) Note: We have 1 other definition for ISTG in our Acronym Attic. This is also very similar to. I Swear to God. 2006)Texting with friends is the best way to use this term. ISTG is commonly used in text messages and other social media conversations as a way to emphasize the truth or sincerity of a statement. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. Use Cases & Examples. So, the next time you see someone using “istg” in a message or post, you’ll know exactly what they mean. This abbreviation is commonly used in informal conversations on various digital platforms, such as text messages,. ” How to understand Texting Abbreviations!! LOL and LMAO, SMH, FFS… and all the other ISTG Meaning A short video summarzing the most common. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. ISTFG, I can’t believe she actually said that to me. ILYSM can be used to express profound affection. The Meaning of ISTG in Text. ISTG is an acronym that is short for “I swear to God”. It could be used to define the frustration or annoyance you might have towards something or somebody. But while the slang term ISTG is harmless, other teenage slang terms could indicate that your teen is talking about risky behaviors or communicating with potentially dangerous people. ISTG has multiple definitions that can be used in various settings. " ISTG is used to add emphasis to a statement (usually a promise, threat,. "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're. IMO meaning: in my opinion. It is a reference to swearing or commitment to God that is not something to take lightly as it is a risk that the person who is saying it could be punished in the event of lying. Swear to fucking god. When used in text conversations, ISTG retains its original meaning of “I swear to God. Do you know what ISTG means in a text message? Watch this video to find out when to use ISTG in a text message and what it means!What Does “ISTG” Stand For? “ISTG” is an acronym that stands for “I Swear to God. They prefer to work in traditional organisational environments, with people who take their. I just won the jackpot on the lottery ticket I bought yesterday, ISTFG! 5. Page ContentsWhat Is ISTG Meaning1. The texting term ISTG, which means "I Swear To God," tells people that you really do mean what you're saying. ISTG Meaning= Expression of Disbelief4. It is a stronger version of the phrase “I swear”. ”. This initialism should be avoided in professional situations or in conversing with someone who is religious. OFC meaning: of course. Confused about slang like cap, HB, ATP, and more? We defined some popular TikTok acronyms for you. It's used express emotional sincerity or to seem intimidating. More violent then just I Swear To God Learn what ISTG means in this quick and easy guide! Find out what the abbreviation stands for and how to use it in real life with this simple explanation. This. In a different context, “sw” can also mean “someone who. OTP meaning: one true pairing (a couple that fans prefer to all other. ” Definition: Istfg is an acronym for “I swear to f Up. ” Kids often use this to express frustration or exasperation. ISTFG. Matching search results: Since the STG meaning is often expressed fully when in a verbal conversation, the term STG should only be used in casual conversations via text or on. Simply put,. Expand Your Lexicon: Discover 5+ Similar Words for ISTFG When it comes to texting, understanding similar. This is only for close friends. It can also be an expression of surprise or. Looking for online definition of ISTG or what ISTG stands for? ISTG is listed in the World's most authoritative dictionary of abbreviations and acronyms ISTG - What does ISTG stand for?Definition of the term. "I swear to. Having a parental control app on your child’s phone will give you. This is a group of teachers that are more than friends. TLDR meaning: too long; didn't read. Well, fret not – I’m here to help unravel the mystery for you. Every TikTok user's FYP. As in, I swear that actually happened. Summary: · The added I at the beginning just refers to the person that is saying this, so ISTG means “I Swear To God”. What does Istg mean in text message . Usually used after saying something ‘cool’. ISTG Meaning What Does “ISTG” Stand For? If you’ve ever seen “ISTG” in a text message or on social media, you might be wondering what it means. "I swear to. ”. The phrase “I swear to God” has been used for hundreds of years and is basically taken from the Old English word “swear” which means an oath. So, if you ever heard OMG (O My God), another popular acronym, ISTG won’t surprise you anymore. The origin of ‘ISTG’ can be traced back to the phrase “I swear to God,” which. new search. Here’s our round-up of the latest Roblox slang. What does GM mean in text from a guy?What does df mean in texting? In the realm of texting and digital messaging, “df” usually stands for “da fuq”, a slang and casual form of saying “the fuck”. Here's what this versatile slang term means and how you can use it in your messages and social media posts. ISTG is an acronym that stands for ‘I Swear To God. ISTG Meaning. Meaning. " ISTG is used to add emphasis to a statement (usually a promise, threat, excuse or apology), or as an interjection which expresses surprise, skepticism or exasperation (similar to OMG ("Oh My God!") ). " People use it in various places on the internet to tell someone to stop talking or as a gut reaction to something offensive or mean-spirited. On the internet, there’s a lot of jargon and abbreviations that often confuse even the most seasoned internet user. ISTG is a slang abbreviation used in online messaging and texting that means 'I swear to God.