Impede bad actor theatre rejected (6)
I believe the answer is:
hamper
'impede' is the definition.
(I've seen this before)
'bad actor theatre rejected' is the wordplay.
'bad actor' becomes 'ham' (I've seen this before).
'theatre' becomes 'rep' (I've seen this before).
'rejected' says the letters should be written backwards.
'rep' written backwards gives 'per'.
'ham'+'per'='HAMPER'
(Other definitions for hamper that I've seen before include "Food parcel" , "Slow up - basket" , "Picnic box" , "Restrict, hinder" , "Christmas basket" .)