plain clothes

US /ˌpleɪn ˈkloʊðz/
UK /ˌpleɪn ˈkloʊðz/
"plain clothes" picture
1.

ropa de civil, de paisano

ordinary clothes, not a uniform or special costume

:
The detective was working in plain clothes.
El detective estaba trabajando de paisano.
Security personnel often blend in plain clothes at events.
El personal de seguridad a menudo se mezcla de paisano en los eventos.