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
Saburou	sah-boo-ṙo:	Japanese
Xenokrates	-	Ancient Greek
Ashurst	['æʃɜ:st]
Ersilia	er-ZEEL-yah	Italian
Patricia	[pə'triʃə]
Claribel	KLER-ə-bel, KLAR-ə-bel	English