Citations:unbreed

Noun: "the mutt, considered as a breed in its own right"

 * 2005 — Julia Szabo, The Underdog: A Celebration of Mutts, Workman Publishing (2005), ISBN 9780761133483:
 * They are a generic, a noname animal, the unbreed, one of a kind, and in these days of mass-produced merchandise, of branding run rampant, the mutt's uniqueness is a priceless commodity.
 * 2006 — "Author Praises Mixed Breeds in 'A Celebration of Mutts'", Akron Beacon Journal, 18 March 2006:
 * The Underdog, A Celebration of Mutts, is an ode to the shelter dog, high praise for the "unbreed."
 * The Underdog, A Celebration of Mutts, is an ode to the shelter dog, high praise for the "unbreed."

Verb: "to undo breeding or its effects"

 * 1890 — George Jacob Holyoake, "Co-operation and Socialism", Subjects of the Day, August 1890:
 * Those unaccustomed to the principle of seeking their own advantage by means conducive to the advantage of others show overreaching suspicion and distrust: these being the vices of competition, in which they have been bred, and you cannot unbreed them very soon.
 * 1961 — The Complete Book of Food and Nutrition (ed. J. I. Rodale), Rodale Books (1961), page 123:
 * It is too bad about the cow! If there were only a way that we could start to unbreed her — to breed her backwards so to speak, to progressively reduce the size of her udders so that one day again she could become a scrub cow.
 * 1967 — Child Development: Readings in Experimental Analysis (eds. Sidney W. Bijou & Donald M. Baer), Appleton-Century-Crofts (1967), page 111:
 * We cannot unbreed the child and reconstitute his genes in a happier combination.
 * 2003 — Heidi Julavits, The Effect of Living Backwards, Berkley (2004), ISBN 9780425198179, page 128:
 * Because it is a matter of breeding, I continued, I imagine that I can unbreed her.
 * 2005 — Tara Brautigam, "Pit bull ban? Owners and officials facing off", The Spectator, 24 January 2005:
 * "That's what they were bred for and you just can't unbreed that kind of stuff in an animal overnight," Ellis said.
 * 2010 — Jenny Diski, What I Don't Know About Animals, Yale University Press (2011), ISBN 9780300176841, page 256:
 * The standard argument against vegetarianism/veganism can't simply be dismissed, if only on practical grounds: we cannot undo what humans have done, unbreed the bred, wild the tame, uneat the eaten.

Verb: "to cause to become extinct through insufficient fertility"

 * 1996 — William G. Hollingsworth, Ending the Explosion: Population Policies and Ethics for a Human Future, Seven Locks Press (1996), ISBN 9780929765426:
 * if subreplacement fertility lingered on and on and on a nation would finally unbreed itself into actual extinction.
 * 2004 — Ben J. Wattenberg, Fewer: How the New Demography of Depopulation Will Shape Our Future, Ivan R. Dee (2004), ISBN 9781566636063, page 16:
 * (No, I don't think the human species will unbreed itself out of existence.)
 * (No, I don't think the human species will unbreed itself out of existence.)

Verb: "(figuratively) to unmake or destroy"

 * 1990 — David Brin, Earth, Bantam Spectra (1994), ISBN 9780307573407, unnumbered page:
 * I say let 'em unbreed themselves, and stop forcing therapy drugs on the pleasure-centered."
 * 1991 — Kenneth Craig, The Arab Christian: A History in the Middle East, Westminster/John Knox Press (1991), ISBN 9780664219451, page 208:
 * In the 1970s it was different, and there was no feasible Shihāb to hold the ring and unbreed suspicion.
 * 2001 — Rebecca Ann Bach, "Tennis Balls: Henry V and Testicular Masculinity, or, According to the OED Shakespeare Doesn't Have Any Balls", in Renaissance Drama, New Series XXX, 1999-2001, Northwestern University Press (2001), ISBN 0810118866, page 6:
 * The French impoverish their masculinity by pouring out their "treasure," but Henry's arousal will unbreed the French as it proves him a son of an Englishman, a nephew of an Englishman, and a father of a son.