Sweetheart scoffed about chap getting discharge (7)
I believe the answer is:
emanate
'discharge' is the definition.
(thesaurus)
'sweetheart scoffed about chap' is the wordplay.
'sweetheart' becomes 'e' (the heart/centre of 'sweet').
'scoffed' becomes 'ate' ('to scoff' is to eat).
'about' means one lot of letters go next to another.
'chap' becomes 'man' (I've seen this before**).
'ate' put after 'man' is 'manate'.
'e'+'manate'='EMANATE'
'getting' acts as a link.
(Other definitions for emanate that I've seen before include "spring" , "Give out, emit" , "Flow or proceed from" , "Rise" , "Issue or originate from manatee" .)