Undercover

/ˌʌndərˈkʌvər/

Meaning & Definition

adjective
Operating or done in secret, especially to gather information.
The detective worked undercover to infiltrate the criminal organization.
Relating to activities that are covert or concealed.
She had an undercover assignment to investigate the corruption within the department.
Characterized by secrecy and stealth.
The undercover agent managed to gather evidence without being detected.
adverb
In a concealed or secretive manner.
He operated undercover, posing as a regular customer.

Etymology

From the combination of 'under' + 'cover', meaning beneath a cover or disguise.

Common Phrases and Expressions

undercover agent
A person who works secretly to investigate a crime.
undercover operation
A secret mission to gather intelligence or evidence.
undercover work
Investigative work done in disguise.

Related Words

covert
Secret or hidden; not openly displayed.
disguise
To change someone's appearance or character to conceal their identity.
spy
A person who secretly collects and reports information.

Slang Meanings

A person posing as someone else to blend in.
He's going undercover at the party, pretending to be a new student.
In the context of secretive operations.
They're running a few undercover gigs this weekend.