대박 means jackpot. It also means wow, amazing, unbelievable, that's crazy, no way, and about fifty other things. One word, infinite situations.
Your friend tells you they just got a job offer at their dream company.
대박.
You taste something unexpectedly delicious.
대박.
You hear that someone's ex is already dating again.
대박.
The word fits all of it. That's what makes it one of the most useful words in Korean.
The word
대박
Romanizationdaebak
Meaningjackpot / amazing / wow / no way
💡 Originally a business term meaning a huge hit or windfall — literally 'big gourd' (대 = big, 박 = gourd), referring to a large harvest. Now used as an all-purpose exclamation for anything impressive, surprising, or unbelievable.
How it's used
대박이다
Romanizationdaebagida
MeaningThat's amazing / That's insane
💡 The most common sentence form. 대박이다! is a complete reaction — you don't need to add anything else. Works for good news, bad news, surprising news.
대박 나다
Romanizationdaebak nada
Meaningto hit it big / to go viral / to blow up
💡 The original business meaning, still used. 그 가게 대박 났어요 = That restaurant really blew up. Used for businesses, songs, shows — anything that suddenly becomes very successful.
완전 대박
Romanizationwanjeon daebak
Meaningabsolutely incredible
💡 완전 (completely/totally) + 대박. One of the most enthusiastic ways to react to something. 완전 대박이에요 = That is absolutely incredible.
In conversation
대박 reactions
Two friends catching up over coffee
A
A
나 어제 로또 샀는데 3등 당첨됐어!
I bought a lottery ticket yesterday and won third place!
B
B
대박! 얼마 받았어?
No way! How much did you get?
A
A
50만원.
500,000 won.
B
B
완전 대박이다. 뭐 할 거야?
That's absolutely incredible. What are you going to do with it?
A
A
일단 밥 사줄게. 대박 기념으로.
First I'll buy you a meal. To celebrate the jackpot.
The range of 대박
SituationToneWhat 대박 means
Good news😄That's amazing / congrats
Bad news😬That's wild / oh no
Delicious food😋This is incredible
Shocking gossip😲No way / seriously?
Business success🚀It really blew up / hit big
Cultural note
대박 is one of the clearest examples of how Korean slang works: a word with a specific original meaning expands until it can react to almost anything. It's now used by all ages, across all situations — in text messages, in drama scripts, in news headlines, in advertising.
If you say 대박 at the right moment in a conversation with a Korean person, you will get an immediate positive reaction. It signals that you understand not just the word, but the feeling behind it.
And the feeling is simple: this is more than I expected.
