bestiality

Etymology

bestial + -ity

noun

1. Sexual activity between a human and another animal species.
   Less common, but still frequent, are erect penises, more complete female nudes, copulations, and even scenes of bestiality. 2018, Tim Flannery, Europe: A Natural History, page 216
   Second, the romance option brings up a unique issue: having sex with an alien. It’s somewhat difficult to say what the Christian should think on this issue because, well, the Bible doesn’t talk about aliens. Probably because they don’t exist (sorry to burst your bubble). Would this be considered bestiality? Or is it not bestiality since they are also beings capable of rational and ethical thought and self-reflection unlike usual animals? OCTOBER 31, 2019, Garrick Beckett, “Beckett: How BioWare Approaches Religion & Sexuality”, in The Lutheran Column, archived from the original on 2020-09-17, Blog
2. Bestial nature, savagery, inhumanity, like (or akin to) an animal's.
   the pitiful inadequacy of the reforms and the bestiality of the white society 1963, James Boggs, The American Revolution: Pages from a Negro Worker's Notebook
3. (dated) Any abstract entity similar to a beast.
4. (archaic) A status of lower animal.
5. (archaic) An animal-like instinct or behaviour.
6. (archaic) A mark, trait, or emblem of a beast.
   "What's your bestiality?" (What's your mark?)