Obstinate, revolting lout? Hurry! (7)
I believe the answer is:
bolshie
'obstinate' is the definition.
(I've seen this before)
'revolting lout? hurry' is the wordplay.
'revolting' says the letters should be written in reverse.
'lout?' becomes 'slob' (I've seen this in another clue).
'hurry' becomes 'hie' (historical word meaning go quickly or hasten).
'slob' reversed gives 'bols'.
'bols'+'hie'='BOLSHIE'
(Other definitions for bolshie that I've seen before include "Uncooperative" , "Obstinate" , "Stroppy revolutionary" , "awkward" .)