Don't accept rubbish (6)
I believe the answer is:
refuse
'rubbish' is the definition.
(refuse can mean rubbish or garbage)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for refuse that I've seen before include "Trash" , "Decline to jump (a fence)" , "Decline to take the rubbish" , "Say no to garbage" , "Turn down; waste" .)