Korean slang you'll see online in 2026

2026-10-21

heecheol890102 (Pixabay) / CC0 (Wikimedia Commons)

Open the comments under any Korean video or join a group chat, and you'll soon hit words that aren't in your textbook. Koreans call new slang 신조어 (sinjoeo) – literally "newly made words". Many are abbreviations, some mix Korean and English, and a few are best avoided. Here is the slang you're most likely to see online as of October 2026, all of it in wide, everyday use rather than short-lived memes.

A quick rule first: all of these are casual. Use them with friends and in comments, not with your boss, teachers or people you've just met.

Reactions and laughter

ㅋㅋ (kk) – laughter. It comes from ㅋ, the sound of "k" in 크크 (keukeu), a giggle. More ㅋ means more laughing: ㅋㅋㅋㅋㅋ is a real laugh. ㅎㅎ (hh) is a softer, friendlier smile.

ㅠㅠ or ㅜㅜ – crying eyes. Used for sadness, but also for being moved or overwhelmed: "This song is so good ㅠㅠ".

ㅇㅇ – yes, okay. Short for 응응 (eungeung). Very casual, and can feel curt if you send it to someone you're not close to.

헐 (heol) – "Whoa", "No way", "Seriously?" A reaction to anything surprising, good or bad.

대박 (daebak) – "Awesome!" or "Unbelievable!" Originally meaning a big hit or jackpot, it's now an all-purpose exclamation. It's mild enough that many people use it in speech too.

Fun and boring

꿀잼 (kkuljaem) – super fun. 꿀 (kkul) means honey, and 잼 (jaem) comes from 재미 (jaemi) – fun. The opposite is 노잼 (nojaem) – boring, "no fun", from English "no" plus 잼.

갑분싸 (gapbunssa) – short for 갑자기 분위기 싸해짐 (gapjagi bunwigi ssahaejim) – "the mood suddenly went cold". It's what happens when someone makes an awkward joke.

People and lifestyle

인싸 (inssa) – a popular, sociable person, from English "insider". The opposite is 아싸 (assa) – a loner, from "outsider". Both are casual and sometimes used self-mockingly: 저 완전 아싸예요 (Jeo wanjeon assayeyo) – "I'm a total loner."

갓생 (gatsaeng) – a productive, disciplined life. It combines English "God" with 생 (saeng), from 인생 (insaeng) – life. People post about 갓생 살기 (gatsaeng salgi) – "living a god-tier life": waking up early, studying, exercising.

오운완 (ounwan) – short for 오늘 운동 완료 (oneul undong wallyo) – "today's workout: done". You'll see it as a hashtag on gym selfies.

내돈내산 (naedonnaesan) – short for 내 돈 주고 내가 산 (nae don jugo naega san) – "bought with my own money". Reviewers use it to say a post isn't sponsored.

찐 (jjin) – real, genuine, from 진짜 (jinjja) – really. 찐친 (jjinchin) means a true close friend.

Opinions and feelings

국룰 (gungnul) – "the national rule", meaning an unwritten rule everyone follows. For example: 치킨엔 콜라가 국룰이지 (Chikinen kollaga gungnuriji) – "Chicken with cola – that's just the rule."

킹받다 (kingbatda) – to be really annoyed. It mixes English "king" (meaning extremely) with 열받다 (yeolbatda) – to get angry. It's playful rather than truly angry: 아, 킹받네 (A, kingbanne) – "Ugh, that's so annoying." Casual, but not rude.

손절 (sonjeol) – cutting someone off. Originally a stock-market term for "stop-loss", it now means ending a friendship or relationship. It can sound harsh, so be careful saying it about real people.

TMI – "too much information", used exactly as in English, but Koreans also use it to introduce a random personal fact: TMI인데요... (TMI-indeyo...) – "Random fact, but..."

Use with caution: rude or vulgar slang

존맛 (jonmat) or 존맛탱 (jonmattaeng) – "insanely delicious". It's everywhere in food posts, but the prefix 존- (jon-) comes from a vulgar word. Fine between close friends online; never use it with anyone older or in polite company. You'll also see it written as JMT, its initials in English letters, which is just as rude. A safe alternative is 완전 맛있어요 (wanjeon masisseoyo) – "really delicious".

개- (gae-) as a prefix, as in 개웃겨 (gaeutgyeo) – "hilarious" – means "extremely". 개 literally means dog, and the prefix is crude. Young people use it a lot among friends, but it sounds rough to many listeners.

Korean you can use

Slang changes fast, and words that feel fresh today may sound dated in a year or two. Learn to recognise these, use a few with friends, and keep standard Korean as your default everywhere else.