Fragrant bunch of flowers, say, gone off (7)
I believe the answer is:
nosegay
'fragrant bunch of flowers' is the definition.
(I've seen this before)
'say gone off' is the wordplay.
'off' is an anagram indicator.
'say'+'gone'='saygone'
'saygone' is an anagram of 'NOSEGAY'.
(Other definitions for nosegay that I've seen before include "Gone, say (anag)" , "Fragrant bunch of flowers" , "pick of the bunch" , "Small bouquet" , "Fragrant posy" .)