입이 무거워요 · 입이 무거웠어요 · 입이 무거운 사람 (ㅂ irregular)
to be tight-lipped, to be able to keep a secret
Example
민수는 입이 무거워서 비밀을 말해도 돼요.
Minsu can keep a secret, so it's okay to tell him.
Word parts
Literally 'one's mouth is heavy' — hard to open.
Related words
New every day: Korea news, words and grammar — in your language
입이 무거워요 · 입이 무거웠어요 · 입이 무거운 사람 (ㅂ irregular)
to be tight-lipped, to be able to keep a secret
Example
민수는 입이 무거워서 비밀을 말해도 돼요.
Minsu can keep a secret, so it's okay to tell him.
Word parts
Literally 'one's mouth is heavy' — hard to open.
Related words