Meaning of act up in English

Table of contents
  1. Pronunciation
  2. Verb
    1. Definitions

  1. Pronunciation

    US accent

    UK accent

  1. Verb

    act up

    Definitions

    1. misbehave badly

    Examples

    • « act in a silly or improper way »
    • « The children acted up when they were not bored »
  2. 2. make itself felt as a recurring pain

    Examples

    • « My arthritis is acting up again »

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