Rejected heavy Greek product for lightweight stuff (7)
I believe the answer is:
taffeta
'lightweight stuff' is the definition.
'taffeta' can be an answer for 'stuff' (I have seen 'silky stuff' mean 'taffeta' so perhaps 'stuff' could also mean 'taffeta'). I am not certain of the 'lightweight' bit.
'rejected heavy greek product' is the wordplay.
'rejected' is a reversal indicator.
'heavy' becomes 'fat' (similar in meaning).
'greek product' becomes 'feta' (I am not sure about this - if you are sure you should believe this answer much more).
'fat' written backwards gives 'taf'.
'taf'+'feta'='TAFFETA'
'for' is the link.
Can you help me to learn more?
(Other definitions for taffeta that I've seen before include "it has a fine texture" , "Thin glossy silk fabric" , "Stiff, silky fabric" , "Glossy silk material" , "Crisp, smooth, lustrous fabric" .)