Korean slang changes fast. These are the words young Koreans actually use today the ones you'll hear in K-dramas, K-pop, and real conversations.
Classic Korean Slang Everyone Knows These
대박 (Daebak)
Jackpot / Awesome / No way
One of the most versatile Korean words. Use it for anything surprising, impressive, or unexpectedly good. Or bad context does the work.
헐 (Heol)
Wow / No way / What
The sound of disbelief. Shorter and more immediate than 대박. Like "seriously?!" or "no way." Very common among younger speakers.
짱 (Jjang)
The best / Amazing
Older slang but still used. 짱이야 = it's the best. Often used with other words: 완전 짱 = absolutely the best.
완전 (Wanjeon)
Totally / Completely / So
Used like "so" or "totally" in English. 완전 맛있어 = it's SO delicious. Intensifies whatever comes after it.
Modern Korean Slang MZ Generation
핵 (Haek)
Super / Extremely
From the word for nuclear means something is at an extreme level. 핵 맛있어 = insanely delicious. Very current.
인싸 (Inssa)
Popular person / Social insider
From the English word "insider." Someone who's socially connected and trendy. The opposite is 아싸 (Assa) outsider.
킹받다 (Kingbatda)
So annoying / Makes me angry
Very current slang. Comes from "킹" (king) + 받다 (to receive) in an ironic way. Used when something is frustratingly annoying.
TMI
Too much information
Borrowed directly from English and used exactly the same way. Korean youth culture absorbs English slang rapidly.
Reactions and Expressions
ㅋㅋㅋ (Keukeukeu)
Hahaha written laughter
The Korean equivalent of lol. ㅋ is the consonant K. The more ㅋ's, the harder the laugh. ㅎㅎㅎ is a softer laugh.
ㅠㅠ
Crying face written sadness
The ㅠ character looks like a crying face. Used in texts to express sadness, disappointment, or dramatic despair.
열받다 (Yeolbatda)
I'm fuming / So annoying
Literally "to receive heat." Used when something is genuinely frustrating or makes you angry. Very expressive.
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