10 Korean Slang Words Foreigners Will Love to Know

If you spend enough time watching Korean YouTube videos, scrolling through social media, or talking with Korean friends, you’ll quickly notice that everyday Korean sounds very different from textbook Korean.

People shorten words, combine phrases, invent funny expressions, and sometimes turn an entire sentence into just three or four syllables.

Some of these expressions are playful. Others are dramatic. A few sound strange until you understand where they came from.

Here are 10 Korean slang words and expressions that are fun to know — and even more fun to actually use.

1. 대박 — Daebak

Meaning: Amazing! / No way! / Wow!

Daebak is probably one of the easiest Korean reactions for foreigners to start using.

Originally, the word referred to a big success or jackpot, but today it can be used whenever something is impressive, surprising, or unbelievable.

Someone tells you they won free concert tickets?

“Daebak!”

You see an incredible view from a rooftop in Seoul?

Also “Daebak.”

The exact English translation changes depending on the situation, which is part of what makes the word so useful.

2. 헐 — Heol

Meaning: OMG / What?! / Seriously?

Heol is a short reaction used when something surprises you, shocks you, or leaves you speechless.

It can be serious, but it is often used casually between friends.

For example:

“I accidentally deleted my entire project.”

“Heol…”

It is similar to saying “OMG,” “What?” or “No way” in English.

The tone matters. A long, quiet “Heol…” can sound very different from an excited “HEOL?!”

3. 존맛탱 — Jonmattaeng

Meaning: Crazy delicious / Insanely good

This is one you’ll often see in food-related posts and casual online conversations.

Jonmattaeng means something is extremely delicious.

You might hear it after someone tries great fried chicken, tteokbokki, barbecue, dessert, or pretty much anything worth posting online.

One thing to know: the expression comes from fairly rough slang, so it is best used with friends or in casual online settings rather than formal situations.

Think of it as much stronger than simply saying, “It’s tasty.”

4. 얼죽아 — Eoljuga

Meaning: Iced Americano no matter how cold it is

This one says a lot about Korean coffee culture.

Eoljuga is short for a Korean phrase that roughly means:

“Even if I freeze to death, I’ll still drink an iced Americano.”

Yes, really.

You can see people carrying iced Americanos in Korea even when the temperature is below freezing.

So if someone orders an iced coffee in the middle of winter, their friend might simply say:

“Eoljuga.”

It is one of those expressions that makes much more sense once you spend time in Korea.

5. 중꺾마 — Jungkkyeokma

Meaning: Never give up / What matters is an unbreakable spirit

Jungkkyeokma is an abbreviation of a much longer phrase meaning:

“What’s important is an unbreakable spirit.”

The expression became widely known through Korean gaming and sports culture and is now used more broadly when someone keeps going despite difficulties.

Failed once?

Try again.

Things are not going your way?

Keep going.

That is the basic spirit behind Jungkkyeokma.

It can be used seriously, but Koreans also use it jokingly for very ordinary struggles.

6. 킹받네 — Kingbadne

Meaning: This is so annoying

Kingbadne is a playful way of saying something is extremely irritating.

The funny part is the word king.

Korean internet slang sometimes adds the English word “king” to exaggerate something. In this case, it turns an ordinary expression for being annoyed into something more exaggerated and humorous.

It is usually not the kind of thing you would say during a serious argument.

It works better when your friend steals your last piece of chicken or your game crashes just before you win.

7. 개꿀 — Gaekkul

Meaning: So good / Sweet deal / What a win

Gaekkul is used when something is unusually good, easy, convenient, or beneficial.

Imagine getting upgraded to a better hotel room for free.

“Gaekkul!”

You finish work two hours early.

“Gaekkul.”

It has a casual, slightly rough tone, so once again, this is more of a friends-and-internet expression than something you would use in a formal meeting.

The feeling is close to “Sweet!” or “What a deal!”

8. 존버 — Jonbeo

Meaning: Hold on until the end / Keep enduring

Jonbeo basically means to hang in there no matter what.

The expression became especially popular in online communities, investing conversations, gaming, and situations where someone is determined to wait things out.

You might see it used when someone refuses to sell a falling stock, waits forever for concert tickets, or keeps trying despite a terrible situation.

Like several expressions on this list, its original wording is quite rough, so it is definitely casual slang.

9. 갑분싸 — Gapbunssa

Meaning: Suddenly awkward

This is one of the best examples of how Koreans love abbreviations.

Gapbunssa is short for a phrase meaning:

“The atmosphere suddenly became awkward.”

Imagine everyone is laughing at dinner.

Then somebody mentions a topic nobody wants to talk about.

Silence.

That moment?

Gapbunssa.

It is useful because English does not really have one single word that captures exactly the same situation.

10. 갑툭튀 — Gaptuktwi

Meaning: Suddenly pops out

Gaptuktwi describes someone or something that suddenly appears out of nowhere.

A friend unexpectedly walks into your photo.

A cat suddenly jumps out from behind a box.

A random person enters a conversation with no warning.

That can all be described as Gaptuktwi.

It is another classic Korean abbreviation that sounds funny even before you know what it means.

Knowing the Meaning Is Only Half the Fun

You do not need to use slang to speak Korean well.

But knowing these expressions makes Korean conversations, memes, comments, and videos much easier to understand.

And if you drop a perfectly timed “Daebak!” or “Heol!” into a conversation with Korean friends, you might get a surprised reaction of your own.

Just remember that several expressions on this list are very casual and sometimes come from rough language.

Use them with friends, online, or in relaxed situations — not with your boss.

That difference between textbook Korean and the way people actually talk is part of what makes learning the language so much fun.