undercover
[ uhn-der-kuhv-er, uhn-der-kuhv- ]
/ ˌʌn dərˈkʌv ər, ˈʌn dərˌkʌv- /
adjective
working or done out of public sight; secret: an undercover investigation.
engaged in spying or securing confidential information: an undercover agent.
SYNONYMS FOR undercover
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for undercover
undercover
/ (ˌʌndəˈkʌvə) /
adjective
done or acting in secretundercover operations
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Idioms and Phrases with undercover
under cover
Protected by a shelter, as in It began to pour but fortunately we were under cover. [c. 1400]
under cover of. Also, under the cover of. Hidden or protected by, as in They sneaked out under cover of darkness, or, as it was put in a sermon in 1751: “Presumption which loves to conceal itself under the cover of humility” (John Jortin, Sermons on Different Subjects).
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.