Put off by revolting material in set (10)
I believe the answer is:
determined
'set' is the definition.
('determined' can be a synonym of 'set')
'put off by revolting material' is the wordplay.
'put off' becomes 'deter' (I've seen this before).
'by' says to put letters next to each other.
'revolting' shows that the letters should be reversed in order.
'material' becomes 'denim' (denim is a kind of material**).
'denim' in reverse letter order is 'mined'.
'deter'+'mined'='DETERMINED'
'in' is the link.
(Other definitions for determined that I've seen before include "Found out" , "Firmly decided" , "settled" , "Decided - resolute" , "set" .)