under (one's) hat


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under (one's) hat

In confidence; as a secret; without being disclosed to others. Keep this under your hat for now, but Greg is definitely the one getting the promotion. As long as it stays under his hat, I don't mind giving John some insider tips.
See also: hat
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

under (one's) hat

As a secret or in confidence: Keep this information under your hat.
See also: hat
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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