up to no good

This page is about the idiom up to no good

INFORMAL

Meaning

If someone is up to no good, they are doing something bad, or something wrong.

I can always tell when young Bobby is up to no good. He can't look me in the eye.
Jenny found some text messages in her husband's phone that made her suspect he was up to no good.

Contributor: Matt Errey

"EnglishClub made our classes so fun and informative" - Heloise, Maria Eduarda and Luciano, Brazil

"This app is soooooooooooooooooo ooooooooooooooooooooooooooooooooooo*few years later*oooo good!" - Victor Demayo, Learner, Philippines

"The Magic site! Cleverly designed, stimulating, easily viewed. Thank you!" - Misha from Belgrade, Learner of English, Serbia

"This site is AWESOME." - Jaycel Barona, Learner of English

"I am grateful to Josef Essberger for the 7 Secrets. They are informative and sharp." - Andrey Kochanov, Learner of English, Russia

"veryveryveryveryveryveryveryveryveryveryveryveryveryvery good site!!!!!!" - Andrew, Learner, South Korea

"I can no longer differentiate between learning and having fun." - Yarianto, Learner of English, Indonesia

"Excellent because complete, very useful and well organized." - Michela Grammatico, Learner of English, Italy

"Very helpful...very nice...free of charge!" - Ashraf Saber, Egypt