Romeo forced out and cast aside (8)
I believe the answer is:
rejected
'cast aside' is the definition.
(to reject is to abandon or cast aside)
'romeo forced out' is the wordplay.
'romeo' becomes 'R' (phonetic alphabet: alpha, bravo, charlie etc.).
'forced out' becomes 'ejected' ('eject' can be a synonym of 'force out').
'r'+'ejected'='REJECTED'
'and' is the link.
(Other definitions for rejected that I've seen before include "Not accepted" , "Turned down" , "Refused to accept, spurned" , "Discarded" , "Dismissed" .)