0 working secretly using a false appearance in order to get information for the police or government:
1 secretly and using a false appearance in order to get information for the police or government:
He was working undercover at the time, probably for the CIA.
He is ordered to go undercover to infiltrate the criminal underworld.
2 working secretly to obtain information, esp. for the police:
an undercover cop
She doesn't know Jack is an undercover police agent attempting to infiltrate her group.
As an undercover officer in the Miami police department, your job is to track down an international gang of car thieves.
Prosecutors have long relied on witnesses, phone taps, and undercover surveillance.
Many narcotic investigators work undercover.
He started his career in uniform, then went undercover in some of the city's most blighted neighbourhoods.
We were so worried we even approached a detective agency with the idea of sending in someone undercover.
Of particular interest for its aspects of ' sleuthing ' is the story of the undercover agent, recruited to collect evidence while acting as a nurse's aide.
A gang of badger baiters was trapped by an anti-blood sports undercover agent, who made a video film of the cruelty.
中文繁体
（爲給員警或政府搜集情報）秘密工作的，私下進行的…
More中文简体
（为给警察或政府搜集情报）秘密工作的，私下进行的…
MoreEspañol
secreto, infiltrado/da [masculine-feminine, singular]…
MorePortuguês
secreto…
MoreTürk dili
gizli, gizli yapılan, gizli çalışan…
MoreFrançais
infiltré/-ée, agent [masculine] secret, clandestin…
MoreČeština
tajný…
MoreDansk
hemmelig…
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