Spurn or slight (6)
I believe the answer is:
ignore
This clue is a double definition.
'spurn' is the first definition.
(I've seen this before)
'slight' is the second definition.
(synonyms)
(Other definitions for ignore that I've seen before include "Discount" , "Deliberately take no notice" , "Fail to notice (6)" , "Pass over" , "Brush off" .)