Where does “incestuous” come from?

Incestuous derives from Latin incestus, formed with the prefix in- meaning "not" applied to castus "chaste," tracing back through Proto-Indo-European ne "not."

incestuous (English): Pertaining to or engaging in incest;...

Definitions

  1. Pertaining to or engaging in incest;...

Ancestry of “incestuous”, step by step

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

Words derived from “incestuous

Every word from Proto-Indo-European ḱes-Every word from Proto-Indo-European ḱes-éh₁-ye-tiEvery word from Proto-Italic kazēō