Korean Idioms & Expressions

입이 무겁다

ibi mugeopda

Literal meaning

'one's mouth is heavy' (입 = mouth + 무겁다 = heavy)

To be tight-lipped and discreet — someone who keeps secrets well and doesn't talk needlessly.

Korean	English
그 친구는 입이 무거우니 비밀을 털어놓아도 괜찮다. geu chinguneun ibi mugeouni bimireul teoreonoado gwaenchanta.	That friend is very tight-lipped, so it's fine to confide a secret to him.

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