let one's hair down

Idioms and Phrases

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]

Related Words

• describe
• detail
• disclose
• present
• reveal