WordNet: better half, married person, mate, partner, spouse

a person's partner in marriage

• hypernym domestic partner, significant other, spousal equivalent, spouse equivalent

• hypernym relation, relative

• hyponym bigamist

• hyponym consort

• hyponym helpmate, helpmeet

• hyponym hubby, husband, married man

• hyponym monogamist, monogynist

• hyponym honeymooner, newlywed

• hyponym polygamist

• hyponym married woman, wife

• member holonym man and wife, marriage, married couple

better half

• (suomi) parempi puolisko (synonyymi)

married person

• (suomi) puoliso (synonyymi)

mate

• (englanti) mate (derivationally related)
• (suomi) elämänkumppani (synonyymi)

partner

• (suomi) partneri (synonyymi)

• (suomi) puoliso (synonyymi)

spouse

• (englanti) spousal (derivationally related)
• (suomi) puoliso (synonyymi)

• (suomi) aviopuoliso (synonyymi)

• (suomi) siippa (synonyymi)