Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- v. To make mongrel in race, nature, or character.
Century Dictionary and Cyclopedia
- To make mongrel; give a mongrel nature or character to.
Wiktionary
- v. To breed a mongrel
- v. To cross-breed
GNU Webster's 1913
- v. To cause to be mongrel; to cross breeds, so as to produce mongrels.
WordNet 3.0
- v. cause to become a mongrel
Examples
“In the South, Democrats who understood nothing about the candidate as a man, nothing at all, castigated him as a symbol of “Black Republicanism”–a “sooty and scoundrelly” abolitionist who wanted to free the slaves and mongrelize the white race.”
“Could the Galicians be assimilated or would their presence mongrelize the nation?”
“I pulled a chair up and watched his lips: glom the inside track to Jesus, fight the Jew-Communist conspiracy to mongrelize Christian America.”
White Jazz
“He is saying _he_ won't integrate because black blood will _mongrelize_ his race!”
The Autobiography of Malcolm X
“Let them mongrelize their nation into SOuthern Asian hut trash & abo nig mongrels.”
“I say this all the time, but to me this harks back to the classic racist/conspiratorial notion of Jews who are ubercapitalist "international bankers," socialists, and mad social scientists attempting to mongrelize the white race by siccing nonwhites on pure, chaste Caucasians.”
Lists
‘mongrelize’ hasn't been added to any lists yet.

whichbe 1. to subject (a breed, group, etc.) to crossbreeding, esp. with one considered inferior.
2. to mix the kinds, classes, types, characters, or sources of origin of (people, animals, or things).
3. to make debased or impure: The French they speak is mongrelized.
(Dictionary.Com) May 27, 2008