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  1. act up
    • 1. (of a thing) fail to function properly

    • 2. behave badly

    • 3. be promoted to a more senior position on a temporary basis

    • (of a thing) fail to function properly

      behave badly

    • begin to behave in a better way, especially by giving up alcohol, drugs, or illegal activities
    • begin to behave in a better way, especially by giving up alcohol, drugs, or illegal activities
  1. 4 results