Cheat: go back into French street (5)
I believe the answer is:
rogue
'cheat' is the definition.
(thesaurus)
'go back into french street' is the wordplay.
'back' is a reversal indicator.
'into' indicates putting letters inside.
'french street' becomes 'rue' (French for street or road).
'go' reversed gives 'og'.
'og' inserted into 'rue' is 'ROGUE'.
(Other definitions for rogue that I've seen before include "Unprincipled man" , "Dishonest chap; solitary (elephant)" , "Miscreant" , "one behaving atypically" , "Diseased plant" .)