be up to no good

(informal)

if someone is up to no good, they are doing something bad She thinks her husband has been up to no good because she found long blonde hairs on his jacket.

Common Names:

Name	Pronounced	Usage
Haynes	[heinz]
Curry	['kə:ri]
Tenzin	-	Tibetan, Bhutanese
Samuilu	-	Old Church Slavic
Lefteris	-	Greek
Feidlimid	-	Ancient Irish, Irish Mythology