Give in, accepting affair's suggestive (8)
I believe the answer is:
redolent
'suggestive' is the definition.
(thesaurus)
'give in accepting affair's' is the wordplay.
'give in' becomes 'relent' (I've seen this before).
'accepting' indicates putting letters inside.
'affair' becomes 'do' (do is a kind of affair).
'relent' enclosing 'do' is 'REDOLENT'.
(Other definitions for redolent that I've seen before include "Aromatic" , "Fragrant; suggestive (of)" , "Objective scented" , "odorous" , "Smelling of, evocative" .)