undercover agent is a noun meaning "(military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors". It carries one recorded sense.
(military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors
military
Definitions, synonyms and semantic relations for undercover agent come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.