spousal : Idioms & Phrases
spousal equivalent
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noun a person (not necessarily a spouse) with whom you cohabit and share a long-term sexual relationship
spouse equivalent; significant other; domestic partner.
WordNet
spousal relationship
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noun the state of being a married couple voluntarily joined for life (or until divorce)
union; matrimony; marriage; wedlock.
- a long and happy marriage
- God bless this union