Crossword Genius

Misbehave in a court — in a court! (3,2)

Ross

I believe the answer is:

act up

'misbehave' is the definition.
(acting up is a kind of misbehaving)

'a court in a court' is the wordplay.
'court' becomes 'ct' (abbreviation used in road names).
'in a court' becomes 'up' (up before a judge).
'a'+'ct'+'up'='ACT UP'

'in' is the link.

(Other definitions for act up that I've seen before include "Behave badly, cause trouble - like thespian?" , "Become unpleasant" , "Mess about" , "Informally, behave badly or cause trouble" , "Behave badly (colloq.)" .)

I've seen this clue in The Times.
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