let your hair down
idiomPart ofhair
let your hair down — idiom
1. to relax and enjoy yourself freely after a period of being formal or careful abo
1.idiom
Definition
to relax and enjoy yourself freely after a period of being formal or careful about how you behave
Example
After the wedding ceremony, the guests let their hair down and danced until midnight.
Theo finds it hard to let his hair down at office parties because he is shy.