Catch parent misbehaving (6)
I believe the answer is:
entrap
'catch' is the definition.
(to entrap is to catch with a trap)
'parent misbehaving' is the wordplay.
'misbehaving' is an anagram indicator.
'parent' with letters rearranged gives 'ENTRAP'.
(Other definitions for entrap that I've seen before include "Lure into wrongdoing in order to arrest" , "Trick or beguile for parent" , "Frame -- stitch up" , "Snare, trick" , "Catch - frame" .)