The Archive

Etymology Journal ยท K

Keep it under your hat

Meaning

A command to keep a piece of information secret. It suggests that the information should stay inside your head and not be shared with others.

Confidential, conspiratorial

Used in a sentence

  • I am planning to propose next month but keep it under your hat.
  • We have a big announcement coming on Monday but keep it under your hat.
  • She told me she is quitting, but asked me to keep it under my hat.

The backstory

This is a mid-19th-century phrase that likely refers to the idea of storing secrets in one's head, physically covered by a hat to keep them contained.

Heard in

Nationwide

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