What Are You Doing in Korean: 뭐 해? — Korea's Real 'Hey'
"What are you doing" in Korean is 뭐 해? (mwo hae) — but nobody asking it actually wants a status report. It's the default text you send to open a conversation, closer to "hey, you around?" The polite version is 뭐 하세요? (mwo ha-se-yo), and 뭐 하고 있어? (mwo ha-go i-sseo) asks the same thing with more urgency, right now, this second.
Every beginner learns 뭐 해? as "what are you doing" and files it away as small talk. It isn't. Nobody in Korea texts 뭐 해? because they're conducting a survey of your afternoon. They text it because they're bored, they're thinking of you, or both — and they'd rather ask a low-stakes question than admit either.
Below: the three-rung politeness ladder, the handful of replies everyone actually sends, a chat scene showing the whole exchange live, and the meme that turned one two-syllable question into a Korean cultural shorthand for "it's 2 a.m. and I'm thinking about my ex."
뭐 해?: not surveillance, an opener
뭐 해?
mwo hae?
What are you doing?
Casual — friends, partners, anyone you'd banmal with. The default "hey, talk to me" text.
뭐 하세요?
mwo ha-se-yo?
What are you doing?
Polite — coworkers, strangers, elders. Genuinely just a question, no subtext.
뭐 하고 있어?
mwo ha-go i-sseo?
What are you doing (right now)?
Casual, more pointed — checking if someone's actually free, not making conversation.
The politeness marker does more than manage respect here — it deletes the subtext entirely. 뭐 하세요? to your landlord is a plain question. 뭐 해? from someone you've been talking to all week is an invitation to keep talking, and everyone on both ends of that text knows it. If you've been mixing up the two, what in Korean breaks down how 뭐 shifts meaning across its whole family of forms.
The three replies everyone actually sends
| Reply | Literally | What it signals |
|---|---|---|
| 그냥 있어 (geu-nyang i-sseo) | "I'm just being" | The default non-answer — nothing interesting, but the door's open |
| 누워 있어 (nu-wo i-sseo) | "I'm lying down" | Korea's favorite reported status. Not lazy — just honest |
| 일해 ㅠㅠ (il-hae ㅠㅠ) | "working ㅠㅠ" | Sympathy bait. The crying face does more work than the word does |
| 밥 먹어 (bap meo-geo) | "eating" | Neutral, ends the exchange politely if you're actually busy |
Notice what's missing from that list: an actual activity. 그냥 있어 in particular tells you nothing and that's the point — it's a placeholder that keeps the conversation open without committing to a topic. Korean small talk runs on these low-information answers the way English runs on "not much, you?"
In the wild: how the exchange actually plays out
뭐 해?
mwo hae?
What are you doing?
그냥 누워 있어. 너는?
geu-nyang nu-wo i-sseo. neo-neun?
Just lying down. You?
나도 ㅋㅋ 심심해서 연락했어.
na-do kk sim-sim-hae-seo yeol-lak-hae-sseo.
Same lol. Was bored so I texted.
잘했어. 나도 심심했어.
jal-hae-sseo. na-do sim-sim-hae-sseo.
Good call. I was bored too.
심심해서 연락했어 — "I texted because I was bored" — is the honest version of what 뭐 해? already implies. K-dramas use this exact opener constantly, usually right before a scene where two characters who are absolutely not just friends spend an hour texting about nothing.
자니...?: the most loaded two syllables in Korean texting
If 뭐 해? is the daytime opener, 자니 (ja-ni) — "are you asleep?" — is its late-night, higher-stakes cousin. Send 뭐 해? at 3 p.m. and it reads as casual. Send 자니 at 1 a.m. and everyone, including you, knows exactly what kind of text it is: the one people send an ex, or a crush, when they've talked themselves into it after one drink too many.
The grammar is nothing special — 자다 (to sleep) plus the casual question ending -니. What makes 자니 dangerous is timing and history, not vocabulary. Save it for people you're genuinely close to, and know that sending it cold, to someone new, reads less like small talk and more like a confession you didn't mean to make.
Frequently asked questions
What does 뭐 해 mean in Korean?
뭐 해 (mwo hae) literally means "what are you doing" but functions as a conversation opener, not a real question about your schedule. Close friends and partners text it to say "I'm free, are you around" without spelling that out directly.
How do I reply to 뭐 해?
The default replies are 그냥 있어 ("just chilling"), 누워 있어 ("lying down"), or 일해 ㅠㅠ ("working, ugh"). None of them need to be detailed — the point is to keep the conversation going, not to report your actual activity.
What's the difference between 뭐 해 and 뭐 하고 있어?
Both are casual and mean "what are you doing," but 뭐 하고 있어 (mwo ha-go i-sseo) uses the present-continuous form and reads as more pointed — someone checking if you're free right now, rather than opening general small talk.
Is 뭐 해 rude to text a stranger?
Not rude, but oddly familiar — casual 뭐 해 assumes a level of closeness you may not have yet. To someone you don't know well, use the polite 뭐 하세요? instead, which reads as a normal, respectful question with none of the casual subtext.
What does 자니 mean and why is it a meme?
자니 (ja-ni) means "are you asleep?" and is Korea's version of the late-night "u up" text — usually sent to an ex or a crush after midnight. It's well known enough in Korean pop culture to be an instant, knowing punchline on its own.