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View synonyms for spy on
spy on
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Idioms and Phrases
Secretly or furtively observe someone or something, as in The children loved spying on the grownups , or The company sent him to spy on the competitor's sales force . [Early 1600s]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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