Where does “twincestuous” come from?

twincestuous (English) comes from English incestuous, from English incest, from Latin incestus, from Latin castus, from Latin careō, from Proto-Italic kazēō, from Proto-Indo-European ḱes-éh₁-ye-ti, from Proto-Indo-European ḱes- — to cut off, separate; to cut up, to slaughter; to...

twincestuous (English): Pertaining to or engaging in twincest

Definitions

  1. Pertaining to or engaging in twincest

Ancestry of “twincestuous”, step by step

twincestuous traces back through two separate lines of ancestry.

via English incestuous

StepLanguageWordMeaning
1EnglishincestuousPertaining to or engaging in incest;...
2EnglishincestSexual relations between close relatives,...
3Latinincestusunclean, impure, polluted, defiled, sinful,...
4Latincastusmorally pure, guiltless; pure, chaste, free from...
5Latincareōto lack, be without. (usually with ablative), to be deprived of
6Proto-Italickazēōto lack
7Proto-Indo-Europeanḱes-éh₁-ye-ti
8Proto-Indo-Europeanḱes-to cut off, separate; to cut up, to slaughter; to...

via English twin

StepLanguageWordMeaning
1EnglishtwinEither of two people who shared the same uterus...
2Middle Englishtwin
3Old Englishtwīndouble thread, twist, twine, linen-thread, linen
4Proto-West Germanictwiʀntwine, double thread
5Proto-Germanictwiznazthread, twine
6Proto-Indo-Europeandwisnósdouble
7Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European ḱes-Every word from Proto-Indo-European ḱes-éh₁-ye-tiEvery word from Proto-Italic kazēō