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View synonyms for under lock and key
under lock and key
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Idioms and Phrases
Securely locked up, as in He keeps the wine under lock and key . [First half of 1500s]Advertisement
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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