Intermarry

v. i.

1.

To become connected by marriage between their members; to give and take mutually in marriage; - said of families, ranks, races, castes, etc. About the middle of the fourth century from the building of Rome, it was declared lawful for nobles and plebeians to intermarry. - Swift.

Verb

1.

intermarry - marry within the same ethnic, social, or family group

conjoin, endogamy, espouse, exogamy, get hitched with, get married, hook up with, inmarriage, intermarriage, marry, wed