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up to no good Informal

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.

Quick Quiz:

The media suspected some government members had been up to no good because they
  1. hadn't done a good job
  2. had suddenly become rich
  3. hadn't been looking very well

Discuss: up to no good

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