un·der·cov·er
ˌən-dər-ˈkə-vər 
: acting or executed in secret
specifically
: employed or engaged in spying or secret investigation
an undercover agent
undercover
adverb
Synonyms
Examples of undercover in a Sentence
Adjective
an undercover operation to infiltrate the terrorist organization
for months she's been an undercover agent pretending to be a drug dealer
Noun
within the city was a well-organized fifth column, and these undercovers would make themselves known as soon as the invading forces breached the city limits
Recent Examples on the Web
Liza Esquibias, People.com, 25 Oct. 2024
Between October 15 and 16, Jason Imhoff communicated with an undercover detective from the Scottsdale Police Department who posed as a 13-year-old girl through an online platform known to police as a site that predators frequent, court documents showed.
—Lauren De Young, The Arizona Republic, 25 Oct. 2024
Justin Kroll, Deadline, 11 July 2024
Blazer had been wearing a wire, working in tandem with an FBI undercover, ensnaring more than ten coaches in an elaborate plot that revealed corruption in the basketball programs at Louisville, Arizona, LSU, USC and other schools.
—Guy Lawson, Rolling Stone, 24 Mar. 2024
See all Example Sentences for undercover 
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Adjective
In the trailer for the new series, which premieres on Nov. 29 on Paramount+ with Showtime, Michael Fassbender stars as Martian, a spy who has left his undercover position as a CIA agent to return to the real world.
—Liza Esquibias, People.com, 25 Oct. 2024
Between October 15 and 16, Jason Imhoff communicated with an undercover detective from the Scottsdale Police Department who posed as a 13-year-old girl through an online platform known to police as a site that predators frequent, court documents showed.
—Lauren De Young, The Arizona Republic, 25 Oct. 2024
Noun
Starring Sean Penn, it was based on a book Crowe wrote after spending a year undercover as a student at Clairemont High School in San Diego.
—Justin Kroll, Deadline, 11 July 2024
Blazer had been wearing a wire, working in tandem with an FBI undercover, ensnaring more than ten coaches in an elaborate plot that revealed corruption in the basketball programs at Louisville, Arizona, LSU, USC and other schools.
—Guy Lawson, Rolling Stone, 24 Mar. 2024
See all Example Sentences for undercover
Dictionary Entries Near undercover
Cite this Entry
“Undercover.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undercover. Accessed 8 Nov. 2024.
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