One's spurned Union: red voice taken out (8)
I believe the answer is:
divorcee
'one's spurned union' is the definition.
I can't tell whether this defines the answer.
'red voice taken out' is the wordplay.
'taken out' indicates an anagram.
'red'+'voice'='redvoice'
'redvoice' anagrammed gives 'DIVORCEE'.
Can you help me to learn more?
(Other definitions for divorcee that I've seen before include "List of faults" , "One's broken up" , "Legally separated person" , "person no longer in union" , "One from split marriage" .)