in·bred 
(ĭnbrĕd)
(ĭnbrĕd)adj.
1. Produced by inbreeding.
2. Consisting of or involving a homogenous or unvaried group of people: "[The college's] faculty became markedly less inbred, with the proportion of alumni dropping from 68 to 41 percent" (Jerome Karabel).
3. Fixed in the character or disposition as if inherited; deep-seated: an inbred distrust of radicalism.