let one's hair down

(redirected from let down one's hair)

let (one's) hair down

To cease acting formally or conservatively; to ignore or relinquish one's inhibitions or reservations. Also worded as "let down (one's) hair." Come on, Jim, this is a party! Let your hair down and go a little wild!
See also: down, hair, let
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

let one's hair down

Also, let down one's hair. Drop one's reserve or inhibitions, behave casually or informally, as in Whenever the two sisters get together, they let their hair down and discuss all their problems . This expression alludes to the practice of women taking down their pinned-up long hair only in the privacy of the bedroom. [c. 1900]
See also: down, hair, let
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

let one's hair down, to

To give free expression to one’s private views; to behave informally. The term alludes to the long-standing practice of women wearing their long hair pinned up in a variety of styles and taking it down only in the privacy of the bedroom. At first (mid-nineteenth century) the term was to let down the back hair; later it was simply hair. P. G. Wodehouse used it in Heavy Weather (1933): “We can take our hair down and tell each other our right names.”
See also: hair, let, to
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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