Scoffed after material's seen as fake (9)
I believe the answer is:
fabricate
'fake' is the definition.
(thesaurus)
'scoffed after material's' is the wordplay.
'scoffed' becomes 'ate' ('to scoff' is to eat).
'after' says to put letters next to each other.
'material' becomes 'fabric' ('fabric' can be a synonym of 'material'**).
'ate' put after 'fabric' is 'FABRICATE'.
'seen as' acts as a link.
(Other definitions for fabricate that I've seen before include "Invent, make up" , "Make up; manufacture" , "forge" , "Invent or manufacture a story" , "Tell lies" .)