Cast out, ostracise (6)
I believe the answer is:
banish
I believe this clue is a double definition.
'cast out' is the first definition.
(synonyms)
'ostracise' is the second definition.
(synonyms)
(Other definitions for banish that I've seen before include "Drive away, maybe from country" , "Exile in ash-bin" , "Condemn to exile" , "outlaw" , "Deport, exile" .)