Where does “testifier” come from?

testifier (Old French) comes from Latin testificārī, from Latin testificor, from Latin testis, from Latin terstis, from Latin trīstis, from Proto-Indo-European tristh₂s, from Proto-Indo-European steh₂- — to stand.

Ancestry of “testifier”, step by step

StepLanguageWordMeaning
1Latintestificārī
2LatintestificorI testify, bear witness; I bring to light,...
3Latintestiswitness; one who testifies or attests; testicle
4Latinterstis
5Latintrīstissad, unhappy, melancholy, morose
6Proto-Indo-Europeantristh₂sa third party standing, after the two parties to...
7Proto-Indo-Europeansteh₂-to stand

Words derived from “testifier

Every word from Proto-Indo-European steh₂-Every word from Proto-Indo-European tristh₂sEvery word from Latin trīstis