ETYM Latin affinis.
Related by marriage.

ETYM Latin conjugalis, from conjux husband, wife, consort, from conjungere to unite, join in marriage. Related to Conjoin.
Of or relating to marriage or to the relationship between a wife and husband; SYN. connubial.
Pertaining to marriage.

Of or relating to marriage; pertaining to marriage.

ETYM French, from Latin maritalis, from maritus belonging to marriage, a husband. Related to Marry.
Of or relating to the state of marriage; SYN. matrimonial, married.
Connubial; pertaining to husband.

ETYM Latin matrimonialis: cf. French matrimonial. Related to Matrimony.
Of or pertaining to marriage; derived from marriage.

ETYM Latin nuptialis, from nuptiae marriage, wedding, from nubere, nuptum, prop., to cover, to veil, hence, to marry, as the head of the bride was covered with a veil; cf. Greek nymphos bride, nymph: cf. French nuptial.
Of or pertaining to marriage; done or used at a wedding.
Pertaining to wedding.