Where does “imperturbably” come from?

Imperturbably comes from Middle French imperturbable, composed of the Latin prefix im- (from in- meaning "not") and perturbable, ultimately traced through Proto-Indo-European ne meaning "not."

imperturbably (English): In an imperturbable manner; calmly

Definitions

  1. In an imperturbable manner; calmly

Ancestry of “imperturbably”, step by step

StepLanguageWordMeaning
1EnglishimperturbableNot easily perturbed, upset or excited; Calm and...
2Late Latinimperturbabilis
3Latinim-Alternative form of in-; form of "in"; in
4Latinīn-un-, non-, not
5Latinînin, at, on, upon, from (space)
6Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
7Proto-Italicenin
8Proto-Indo-Europeanh₁énin
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Proto-Italic en