intermarry

[ in-ter-mar-ee ]

/ ˌɪn tərˈmær i /

to become connected by marriage, as two families, tribes, castes, or religions.

to marry within one's family.

to marry outside one's religion, ethnic group, etc.

to marry.

Origin of intermarry

First recorded in 1565–75; inter- + marry¹

Everyone understood that people of different races could intermarry, in principle.

Opposing Gay Marriage Doesn’t Make You a Crypto-Racist |Jonathan Rauch |April 24, 2014 |DAILY BEAST
The subtext is that each of us is responsible for all of us, and if we intermarry, we risk disappearing completely.

Israeli Government Tells Israelis Not to Marry American Jews |Allison Yarrow |December 1, 2011 |DAILY BEAST
Both Saivites and Vaishnavites eat together, but do not intermarry.

Castes and Tribes of Southern India |Edgar Thurston
The three first are allowed to intermarry: the last six may also intermarry.

The Worlds Greatest Books, Volume XIII. |Various

Pedigree showing the tendency to intermarry among pauper and defective families.

Abstracts of Papers Read at the First International Eugenics Congress |Various
Of course in actual life the two-child and the five-child groups will intermarry.

The Good Housekeeping Marriage Book |Various
Proper Muhammadans look down on them and decline to take food or intermarry with them.

The Tribes and Castes of the Central Provinces of India--Volume I (of IV) |R.V. Russell

intermarry

/ (ˌɪntəˈmærɪ) /

(of different groups, races, religions, creeds, etc) to become connected by marriage

to marry within one's own family, clan, group, etc

intermarriage, noun