WordNet: domestic partner, significant other, spousal equivalent, spouse equivalent

a person (not necessarily a spouse) with whom you cohabit and share a long-term sexual relationship

• hypernym individual, mortal, person, somebody, someone, soul

• hyponym lover

• hyponym better half, married person, mate, partner, spouse

domestic partner

• (suomi) asuinkumppani (synonyymi)

significant other

• (suomi) kumppani (synonyymi)

spousal equivalent

• (suomi) puoliso (synonyymi)

spouse equivalent

• (suomi) puoliso (synonyymi)