tie that bind (noun) marriage: legal joining of two people; a union
Sinonime: alliance,
amalgamation,
association, confederation, conjugality, connubiality, consortium, coupling, espousal, holy matrimony,
link,
match, mating, matrimony, merger, monogamy, nuptials, pledging, sacrament, spousal,
tie, tie that binds, wedded bliss, wedded state,
wedding, wedding bells, wedding ceremony, wedlock
Antonime: divorce