Where does “imperturbable” come from?

imperturbable (French) comes from Late Latin imperturbabilis, from Latin im-, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

imperturbable (French): imperturbable; unflappable

Definitions

  1. imperturbable; unflappable

Ancestry of “imperturbable”, step by step

StepLanguageWordMeaning
1Late Latinimperturbabilis—
2Latinim-Alternative form of in-; form of "in"; in
3Latinīn-un-, non-, not
4Latinînin, at, on, upon, from (space)
5Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
6Proto-Italicenin
7Proto-Indo-Europeanh₁énin

Words derived from “imperturbable”

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Proto-Italic en →