Where does “tád” come from?

tád (Proto-Indo-Iranian) comes from Proto-Indo-European tód, from Proto-Indo-European to-, from Proto-Indo-European só — this; that.

Ancestry of “tád”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeantóddemonstrative pronoun; that; it
2Proto-Indo-Europeanto-it; that; the, that
3Proto-Indo-Europeansóthis; that

Words derived from “tád”

Every word from Proto-Indo-European só →Every word from Proto-Indo-European to- →Every word from Proto-Indo-European tód →
tád — Etymology, Origin & Word History | Etymology Explorer