intermarriage

Marriage contracted between members of two families, classes, tribes, or races; connection or relation by virtue of such marriage: as, the estates of the families were united by intermarriage.

Consanguineous marriage; marriage between persons nearly related by blood.

Connection by marriage; reciprocal marriage; giving and taking in marriage, as between two families, tribes, races, castes, or nations.

Marriage between people belonging to different groups, such as different racial, ethnic, or religious groups; mixed marriage.

marriage within one’s own tribe or group as required by custom or law

marriage to a person belonging to a tribe or group other than your own as required by custom or law