inbred

Short definition from Wiktionary

Adjective

1. 1
   Bred within; innate.
2. 2
   Having an ancestry characterized by inbreeding.
3. 3
   Describing a strain produced through successive generations of inbreeding resulting in a population of genetically identical individuals which are homozygous at all genetic loci.
4. 4
   Insular or self-contained, primarily interacting with and drawing upon one another.

Noun

1. 1
   A plant or animal produced by inbreeding.
2. 2
   A person born of incest.

Verb

1. 1
   simple past and past participle of inbreed