ex-spouse
Noun
Meaning
a person who was formerly a spouse
Source: WordNetSynonyms
Antonyms
Hypernyms
Examples
Your allegiance is with your spouse; you cannot break that by showing allegiance to your ex-spouse.
Ridge apparently regrets his actions and will make a vow to his ex-spouse.
This could be beneficial if your ex-spouse had a higher income or spent longer in the labor force.