Abused (3-7)
'abused' is the definition.
('ill-treat' can be a synonym of 'abuse')
This is the entire clue.
'abused' is the definition.
(synonyms)
This is all the clue.
(Another definition for maltreated that I've seen is " Abused".)
'abused' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for reviled that I've seen before include "Deliver (anag.)" , "Abusively criticised" , "Abused" , "Maligned, vilified" .)