Where does “unimpugnable” come from?

unimpugnable (English) comes from English impugnable, from English impugn, from Middle French impugner, from Latin impugnō, from Latin im-, from Latin īn-, from Latin în, from Latin en — in.

unimpugnable (English): That cannot be impugned; beyond reproach or...

Definitions

  1. That cannot be impugned; beyond reproach or...

Ancestry of “unimpugnable”, step by step

unimpugnable traces back through two separate lines of ancestry.

via English impugnable

StepLanguageWordMeaning
1EnglishimpugnableThat can be impugned; open to attack, open to...
2EnglishimpugnTo assault, attack; To verbally assault,...
3Middle Frenchimpugnerto attack; to impugn
4Latinimpugnōto attack, fight against
5Latinim-Alternative form of in-; form of "in"; in
6Latinīn-un-, non-, not
7Latinînin, at, on, upon, from (space)
8Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
9Proto-Italicenin
10Proto-Indo-Europeanh₁énin

via English un

StepLanguageWordMeaning
1EnglishunOne

Words derived from “unimpugnable

Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Proto-Italic en