adjective. Of or relating to cacogenesis.

adjective. Tending toward racial deterioration through bad sexual selection.

adjective. pertaining to or causing degeneration in the offspring produced

""Rather than a cacogenic clan or a marginalized crypto-Muslim community," he writes, "the Ishmaels on the Web site appeared to be comfortable, middle-class Americans who got together for annual family picnics.""

cariogenic  cryogenic  cyanogenic