plainclothesman
/ˈpleɪnˌkloʊðzˌmæn/
noun
- A police officer who wears ordinary clothes instead of a uniform, often to work undercover.
- A plainclothesman approached the suspect and quietly showed his badge.
- She didn't realize the man next to her on the bus was a plainclothesman until he made an arrest.
- The plainclothesman blended into the crowd at the market to watch for pickpockets.
Synonyms