Reject rubbish (6)
I believe the answer is:
refuse
I believe this is a double definition.
'reject' is the first definition.
('refuse' can be a synonym of 'reject')
'rubbish' is the second definition.
(thesaurus)
(Other definitions for refuse that I've seen before include "Turn down; waste" , "Decline to jump (a fence)" , "Decline to jump; rubbish" , "household rubbish" , "Don't take the rubbish" .)