undercover

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un·der·cov·er

 (ŭn′dər-kŭv′ər)
adj.
1. Conducted in secret or through the use of subterfuge, as in a police investigation or in spying: an undercover investigation.
2. Engaged or employed in undercover activity: undercover FBI agents.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

undercover

(ˌʌndəˈkʌvə)
adj
done or acting in secret: undercover operations.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

un•der•cov•er

(ˌʌn dərˈkʌv ər, ˈʌn dərˌkʌv-)

adj.
1. clandestine or secret.
2. engaged in securing confidential information.
[1850–55]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.undercover - conducted with or marked by hidden aims or methodsundercover - conducted with or marked by hidden aims or methods; "clandestine intelligence operations"; "cloak-and-dagger activities behind enemy lines"; "hole-and-corner intrigue"; "secret missions"; "a secret agent"; "secret sales of arms"; "surreptitious mobilization of troops"; "an undercover investigation"; "underground resistance"
covert - secret or hidden; not openly practiced or engaged in or shown or avowed; "covert actions by the CIA"; "covert funding for the rebels"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

undercover

adjective secret, covert, clandestine, private, hidden, intelligence, underground, spy, concealed, confidential, hush-hush (informal), surreptitious an undercover operation designed to catch drug smugglers
open, plain, visible, manifest, overt, unconcealed
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

undercover

adjective
Existing or operating in a way so as to ensure complete concealment and confidentiality:
Informal: hush-hush.
Idiom: under wraps.
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Translations
سِرّي
tajný
hemmelig
leynilegur, leyni-
slaptasis
slepens

undercover

[ˈʌndəˌkʌvəʳ]
A. ADJ [operation, activity] → clandestino; [agent] → secreto
B. ADV she was working undercover for the FBItrabajaba como agente secreto para el FBI
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

undercover

[ˌʌndərˈkʌvər]
adj
[operation, investigation, work] → d'infiltration
[officer, police] → en civil
an undercover agent → un agent infiltré
adv [work] → comme agent infiltré
She was working undercover → Elle travaillait comme agent infiltré.
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

undercover

[ˌʌndəˈkʌvəʳ] adj (agent) → segreto/a; (meeting) → clandestino/a
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

undercover

(ˈandəˈkavə) adjective
working or done in secret. He is an undercover agent for the Americans.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
References in periodicals archive ?
The undercover officer recorded a meeting with a hidden camera and a photo of Abdillahi was shared across the force.
Polet Bucio-Perez, 27, of the 600 block of East Downer Place, Aurora, and Jerardo Espinoza-Zepeda, 43, of San Bernadino, California, were arrested Friday on charges they delivered more than 900 grams of the drug to an undercover officer, according to Kane County court records.
The court documents stated that the men were caught by the police after one of them tried to sell drugs to an undercover officer.
The undercover officer was still inside the defendants' vehicle when they tried to escape.
The men were arrested as one of them received the money while the other brought the women to the undercover officer.
Jalal Hussein Ahmed sexually assaulted an undercover officer
Hussain was also charged with providing money and advice to an undercover officer, the intention being to assist another to commit an act of terrorism.
Shadowy police teams have been at the centre of controversy in recent years following a flurry of claims, and Scotland Yard has made payouts to several women who unwittingly became involved in relationships with undercover officers.
She told how the three young men had been observed preparing for their trip and an undercover officer "Muhamed" had befriended them and secretly recorded their conversations.
"We will not allow our undercover officers in cars for safety reasons.