spill the beans

spill the beans idiom
Disclose a secret or reveal something prematurely, as in You can count on little Carol to spill the beans about the surprise. In this colloquial expression, first recorded in 1919, spill means “divulge,” a usage dating from the 1500s.

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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