act up

listen to the pronunciation of act up
Englisch - Englisch
To misbehave; to cause trouble

Children may act up in class in an effort to get attention.

misbehave (for people); not work properly (for machines)."The babysitter had a difficult time because the children acted up all evening." "I guess I'd better take my car to the service. It's been acting up lately."
If a child is acting up, they are behaving badly. = play up
make itself felt as a recurring pain; "My arthritis is acting up again"
misbehave badly; act in a silly or improper way; "The children acted up when they were not bored
malfunction, operate abnormally; behave strangely or abnormally; behave in a disorderly manner, behave disobediently; show off, behave in a way that draws attention to oneself
If something is acting up, it is not working properly. She was messing with the coffee pot, which was acting up again. = play up
misbehave badly; act in a silly or improper way; "The children acted up when they were not bored"
an organization in the US and the UK that demands more help and support for people with AIDS
act up
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