English | Synonym |
---|---|
undercover adjective | clandestineadjective cloak-and-daggeradjective covertadjective hole-and-corneradjective hugger-muggeradjective hush-hushadjective secretadjective surreptitiousadjective undergroundadjective |
undercover agent noun | intelligence agentnoun intelligence officernoun operativenoun secret agentnoun spynoun |
undercover operation noun | operationnoun |
undercover work noun | intelligencenoun intelligence activitynoun intelligence operationnoun spyingnoun |