Where does “unimpeachable” come from?

Unimpeachable comes from English impeachable, from English impeach, from Latin in- combined with a root ultimately from Proto-Indo-European ano-.

unimpeachable (English): Not able to be impeached or reproached;...

Definitions

  1. Not able to be impeached or reproached;...

Ancestry of “unimpeachable”, step by step

StepLanguageWordMeaning
1EnglishimpeachableAble to be impeached; That warrants impeachment
2EnglishimpeachTo hinder, impede, or prevent; To bring a legal...
3Middle EnglishempechenTo hinder; to impede; To formally accuse
4Anglo-Normanempecher
5Old Frenchempeechierto fetter; to hinder
6LatinimpedicoI fetter; I entangle
7Latinpēdicashackle, fetter
8Latinpēsa foot, in its senses as
9Ancient Greekμέτρονsomething used to measure: measure, rule, weight;...
10Ancient Greek-τρονForms instrument nouns
11Proto-Hellenic-tronForms instrument nouns from verb stems
12Proto-Indo-European-tromForms nouns denoting a tool or instrument
13Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

Words derived from “unimpeachable

Every word from Proto-Indo-European -tḗrEvery word from Ancient Greek -τρονEvery word from Ancient Greek μέτρον