발 없는 말이 천 리 간다
bal eomneun mari cheon ri ganda · Words with no feet travel a thousand li.
What you say spreads far and fast, so be careful.
When to useWhen a secret has reached the whole office by lunch.
Think ofWord gets around.
Examples
어제 한 말을 벌써 다 알아? 발 없는 말이 천 리 간다.
Everyone already knows what I said yesterday? Words without feet go a thousand li.