let your hair down

US /lɛt jʊər hɛər daʊn/
UK /lɛt jʊər hɛər daʊn/
"let your hair down" picture
1.

긴장을 풀다, 마음껏 즐기다

to allow yourself to behave much more freely and enjoyably than usual and relax

:
It's good to let your hair down after a long week of work.
긴 한 주간의 일 후에 긴장을 풀고 쉬는 것이 좋다.
The party was a great chance for everyone to let their hair down.
파티는 모두가 긴장을 풀고 즐길 좋은 기회였다.