let down (one's) hair

(redirected from let down my hair)
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let down (one's) hair

To cease acting formally or conservatively; to let go of one's inhibitions or reservations. Come on, Jim, this is a party! Let down your hair and go a little wild!
See also: down, hair, let
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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References in classic literature ?
"That is more like the composed look you comforted me with, my dear, when you showed me such a change!" said I, beginning to let down my hair. "When you are mistress of Bleak House, you are to be as cheerful as a bird.
He added: "I really love being part of the Channel 4 family where I can be myself and let down my hair - what's left of it."