act up


Definition: Meaning of, act up in English to English dictionary.

Pronunciation: / akt ʌp /

  • phrasal verb
  • synonym
  • antonym
Word Forms:
Prsesent Past Past Participle
act up acted up acted up
Present Participle Third Person Singular
acting up acts up
[intransitive] [informal]
  1. if children act up, they behave badly
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    ANTONYM
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  2. if a part of your body or a piece of equipment acts up, it starts to become painful or to develop problems
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    ANTONYM
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synonym
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