Definition of act up phrasal verb from the Oxford Advanced Learner's Dictionary

 

act up

 phrasal verb
phrasal verb
 
jump to other results
Phrasal Verbs
  1. 1to behave badly The kids started acting up.
  2. 2to not work as it should How long has your ankle been acting up?
See the Oxford Advanced American Dictionary entry: act up

Other results

All matches
Idioms