Sharp chap follows play on words (7)
I believe the answer is:
pungent
'sharp' is the definition.
(thesaurus)
'chap follows play on words' is the wordplay.
'chap' becomes 'gent' (I've seen this in other clues**).
'follows' is a charade indicator (letters next to each other).
'play on words' becomes 'pun' ('pun' can be a synonym of 'play on words').
'gent' after 'pun' is 'PUNGENT'.
(Other definitions for pungent that I've seen before include "With a sharp taste or smell" , "Strong-smelling" , "With a fifteen ac smell/taste" , "Acrid to smell" , "Sharply tasting or smelling" .)