Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


let your hair down

old-fashioned informal

Definition

to allow yourself to behave much more freely than usual and enjoy yourself
Oh let your hair down for once!

(Definition of let your hair down from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Word of the Day

get in a sweat

to worry

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More