Give voice to others and be abused in return (7)
I believe the answer is:
deliver
'give voice' is the definition.
(thesaurus)
'abused in return' is the wordplay.
'abused' becomes 'reviled' (reviling is a kind of abusing).
'in return' says the letters should be written backwards (return can mean to go backwards).
'reviled' in reverse letter order is 'DELIVER'.
'to others and be' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for deliver that I've seen before include "Render" , "Highwaymen's cry - stand and ......." , "Formally hand over" , "Bring to its destination - rescue" , "Bring letter or rescue" .)