This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
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v. To breed by the continued mating of closely related individuals, especially to preserve desirable traits in a stock.

v. To breed or develop within; engender.

v. To breed or reproduce with those that are related.

v. To breed with those that share common traits or qualities.

v. To produce or generate within.

v. To produce or generate within.

v. To breed in and in. See under Breed, v. i.

To breed, generate, or develop within.

To breed from animals of the same parentage or otherwise closely related; breed in-and-in.

"And I've also commented that we tend to "inbreed" as in our department at UVa, since we get thrown together in the offices and work late hours and then all go out together ... things happen."

inbred    inbreeding    inbreeds   

inbred   

breed