(British, idiomatic) To misbehave.
Our school team is playing up at the old recreation ground.
No comments yet — say something.
(transitive) To make or attempt to make something appear more important, likely, or obvious; to showcase or highlight.
Children who do not receive enough attention may begin to play up.
No comments yet — say something.
(intransitive) To play (e.g. sport or music) more vigorously.
The radar system is playing up again.
No comments yet — say something.
Add your own interpretation of "play up".
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