A huge hapless chap, awfully inept in company (6)
I believe the answer is:
gauche
'inept in company' is the definition.
'a huge hapless chap awfully' is the wordplay.
I cannot quite understand how this works, but
'a' is within the answer.
'chap' could be 'che' and 'che' is found within the answer.
The remaining letters 'gu' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
(Other definitions for gauche that I've seen before include "Unsophisticated and socially awkward" , "Clumsy, socially awkward (6)" , "Ill-at-ease, awkward in social situations" , "Raw and naive" , "Clumsy and inept" .)