inbred

sisäsiittoinen

luontainen bred Bred within; innate.
1899, (w), The Golden Age/A White-washed Uncle

We who from daily experience knew Miss Smedley like a book—were we not only too well aware that she had neither accomplishments nor charms—no characteristic, in fact, but an inbred viciousness of temper and disposition?

His cold experience tempers all his heat, And inbred worth doth boasting valour slight.

People discovered that the Belgian hare of those days was a very delicate animal and that it was subject to many diseases. It had been inbred so long in order to produce show animals that its vitality was nearly gone.

Since you all marry your cousins I bet youre a bunch of inbreds.''