Ignore the rebate (8)
I believe the answer is:
discount
This clue is a double definition.
'ignore' is the first definition.
(I know that ignore can be written as discount)
'the rebate' is the second definition.
(synonyms)
(Other definitions for discount that I've seen before include "Ignore - price reduction" , "Disbelieve" , "Ignore - trade concession" , "Deduction granted on payment" , "Reduce in price" .)