skeleton in the closet

skeleton in the closet idiom
A shameful secret, as in Both her parents were alcoholics; that was the skeleton in her closet. This metaphoric term alludes to a murder victim long concealed in a closet, possibly based on some true incident that is now forgotten. [Early 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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