The Collaborative International Dictionary
ex-spouse
ex-spouse \ex-spouse\ n. a person who was formerly a spouse.
WordNet
ex-spouse
n. a person who was formerly a spouse
Usage examples of "ex-spouse".
No roommates, no sublets, no ex-spouses or former lovers, and even if one of their relatives had looked like her, they'd never given anyone a key because the wife was home all day so who locked the doors?
She found herself in the position of thousands of other parents whose ex-spouses had kidnaped their children.