plain clothes

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

roupas civis, à paisana

ordinary clothes, not a uniform or special costume

:
The detective was working in plain clothes.
O detetive estava trabalhando à paisana.
Security personnel often blend in plain clothes at events.
O pessoal de segurança frequentemente se mistura à paisana em eventos.