inbreeder

One who engages in inbreeding. / One who engages in incest.

Japanese Meaning

近親交配を行う者 / 近親相姦を行う者

The report labeled the farmer an inbreeder after several generations of closely related livestock produced weak calves.

報告書は、数世代にわたって近親交配された家畜が虚弱な子牛を生んだため、その農場主を近親交配者だと断定した。

Sense（1）

One who engages in inbreeding.

[…] the genetic fitness of the inbreeder male […]

Sense（2）

One who engages in incest.

[…] inbreeder! Go home and screw your sister!

inbreeders

（ plural ）