civvyPronunciation: /ˈsɪvi/ informalDefinition of civvy noun (plural civvies) a civilian, as distinct from a member of the police force or armed services. (civvies) civilian clothes, as opposed to uniform:the Chief Constable came along in civvies adjective [attributive] relating to civilians:fliers who left the services for civvy airlinesPhrases Civvy Street British informal civilian life:ex-service people starting life on Civvy StreetOrigin: late 19th century: abbreviationcivvy in other Oxford dictionaries Definition of civvy in the US English dictionary