Where does “dwáyṣas” come from?

dwáyṣas (Proto-Indo-Aryan) comes from Proto-Indo-Iranian dwáyšas, from Proto-Indo-European dwey-s-ós, from Proto-Indo-European dwey- — to fear.

Ancestry of “dwáyṣas”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iraniandwáyšashatred, hostility, enmity
2Proto-Indo-Europeandwey-s-ós—
3Proto-Indo-Europeandwey-to fear
Every word from Proto-Indo-European dwey- →Every word from Proto-Indo-European dwey-s-ós →Every word from Proto-Indo-Iranian dwáyšas →