Patronising attitude (13)
I believe the answer is:
condescension
'patronising attitude' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for condescension that I've seen before include "Graciousness as to an inferior" , "Disdain, haughtiness" , "Patronising graciousness" , "Patronising attitude" , "Patronising arrogance" .)