Definition, Meaning & Synonyms

act-up

phrasal verb
/ækt ʌp/
Definition
To behave badly or inappropriately, often causing trouble or disruption.
Examples
  • The child started to act up during the long meeting, causing a distraction.
  • My old computer tends to act up when I’m running multiple programs at once.
  • When pets get bored, they may act up and misbehave.
Meaning
The phrase ‘act-up’ refers to situations where an individual, often a child or a pet, misbehaves or causes a disturbance. It can also denote when machinery or devices fail to operate correctly.
Synonyms
  • misbehave
  • act out
  • cause trouble
  • disrupt