What is another word for plainclothesman?
Pronunciation: [plˈe͡ɪŋklə͡ʊðsmən] (IPA) 
A plainclothesman is a police officer who works undercover and wears plain clothes to blend in with the crowd. However, there are several other synonyms that are used to describe such police officers. Some other common synonyms for a plainclothesman are undercover cop, street cop, plainclothes officer, plainclothes detective, and plainclothes operative. These terms are used interchangeably to describe a police officer who is not in uniform and is trying to catch criminals by blending in with them. While each of these synonyms has its own unique connotation, they all essentially refer to the same type of police officer working in plain clothes.
