let one's hair down

Idioms  

1. 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]

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Example Sentences

But residents such as Daniel Dean, whose livelihood depends on the city’s allure as a place to let one’s hair down, are worried that revelers will lose their taste for revelry under the cameras’ eye.

From New York Times

Related Words

• describe
• detail
• disclose
• present
• reveal