Idiom of the Day : (16 sep 2017)

✔ Up to no good

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

■ For example:

      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.