잠수 타다

You send a message to a friend, but a day, two days, even a week goes by with no reply. You could’ve sworn they were online, yet suddenly it’s as quiet as if they’d vanished from the face of the earth. In moments like these, Koreans say: “쟤 요즘 잠수 탔어” (jyae yojeum jamsu tasseo, “They’ve gone off the grid lately”). Today we’re taking a deep dive into a vivid piece of slang that Koreans use practically every day: 잠수 타다 (jamsu tada).

Breaking down 잠수 타다 (jamsu tada) literally is pretty fun. 잠수 (jamsu) means ‘going underwater to hide your body’ — the same ‘잠수’ as in diving or a submarine. 타다 (tada) originally means ‘to ride a car or boat,’ but here it attaches with the feeling of ‘to hop onto a certain state, to do that kind of action.’

So when the two words come together, this picture forms: a person who dives deep underwater and never surfaces. From the outside, you can’t see where they are or what they’re doing at all. This very image is the heart of the expression.

Meaning and Nuance

잠수 타다 (jamsu tada) means deliberately cutting off contact and going without any word for a while. It’s a state where the person doesn’t answer calls, either 읽씹 (reads-and-ignores) your messages or doesn’t check them at all, and goes quiet on social media too.

There are two important nuances.

First, it’s usually a ‘self-chosen’ disappearance. You use it not when someone is unreachable because of an accident, but when they intentionally vanish because they’re worn out or want to hide.

Second, it’s not a complete cutting of ties. 잠수 (jamsu) is just ‘briefly going underwater,’ so there’s room to come back up to the surface someday. That’s why it’s lighter than ending a relationship for good — it carries the nuance of ‘they might disappear for a while and then come back.‘

Example Sentences by Situation

① When love gets hard (잠수 이별, ghosting a partner)

남자친구가 갑자기 잠수 탔어 (jamsu tasseo). 일주일째 연락이 안 돼. (My boyfriend suddenly went off the grid. It’s been a week with no contact.)

When your partner suddenly cuts off contact without even saying they want to break up, it’s called 잠수 이별 (jamsu ibyeol). It’s a bitter scene that comes up often in dating among the younger generation these days.

② When you’re too busy or too worn out

나 이번 주는 시험 끝날 때까지 잠수 탈게 (jamsu talge). 연락 안 돼도 놀라지 마. (I’m going off the grid this week until my exams are over. Don’t be alarmed if you can’t reach me.)

Here it’s not so much negative as it is a heads-up: ‘I need to focus, so I’m going to disappear for a bit.’ It’s an expression that carries the thoughtfulness of telling people in advance.

③ To a quiet friend in a group chat

야, 너 왜 이렇게 잠수 타 (jamsu ta)? 단톡방에 얼굴 좀 비춰라! (Hey, why are you so off the grid? Show your face in the group chat once in a while!)

This is a playful situation where you warmly scold a friend who’s finally shown up after a long absence.

Polite vs. Casual Speech, and Similar Expressions

잠수 타다 is slang, so it’s usually used in casual speech (반말) between close friends.

Casual: 잠수 탔어 (jamsu tasseo) — between friends or lovers
Polite: 잠수 타셨어요? (jamsu tasyeosseoyo?) — possible, but it sounds awkward and playful

In formal settings, it’s better to use more polite expressions like 연락이 두절되다 (yeollagi dujeoldoeda, contact is cut off**)** or 잠적하다 (jamjeokhada, to vanish without a trace**)**. For example, at work, “그 거래처와 연락이 두절됐습니다” (We’ve lost contact with that client) sounds more natural than “그 거래처가 요즘 잠수 탔어요” (That client’s been off the grid lately).

There are also expressions that are similar but have a different feel. 읽씹하다 (ikssiphada) means ‘reading a message but not replying,’ so it’s narrower in scope than 잠수, and 손절하다 (sonjeolhada) means cutting off a relationship entirely, so it’s far more decisive than 잠수.

Cultural Background

With KakaoTalk and more, Korea has a strong ‘always connected’ culture. When the ‘1’ disappears from a message, both sides know the other person has read it. So expectations around ‘staying in touch’ are high, and that makes the sudden silence of 잠수 (jamsu) feel all the bigger.

In dramas, too, there are frequent scenes where a character turns off their phone and disappears for a few days when they’re hurt or want to sort out their feelings alone. In these moments, another character anxiously searching for them, saying “연락 좀 받아, 왜 잠수야?” (Answer me, why are you off the grid?), is a staple scene in Korean dramas. In this way, 잠수 타다 is more than just a trendy phrase — it’s an expression that beautifully reflects the Korean sentiment that values relationships and communication.

Today’s Quiz

A friend wants to deliberately cut off contact during exam period to focus only on studying. What’s the most natural thing they could say before disappearing?

“나 잠수 이별 할게.” (I’m going to ghost you as a breakup.)
“나 시험 끝날 때까지 잠수 탈게.” (I’m going off the grid until exams are over.)
“나 너 손절할게.” (I’m going to cut you off for good.)

The answer is number 2. Number 1 means breaking up with a romantic partner, and number 3 means severing the relationship, so neither fits the situation. Now you can start using this naturally too — but of course, don’t actually go off the grid! 😉