Clumsy French drive on it over here (6)
I believe the answer is:
gauche
'clumsy' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
(Other definitions for gauche that I've seen before include "'Ill-at-ease, awkward (6)'" , "Raw and naive" , "careless" , "Ill-at-ease, awkward in social situations" , "Clumsy and unsophisticated" .)