Where does “imperturbability” come from?

imperturbability (English) comes from English perturbability, from English perturb, from French perturber, from Italian perturbare, from Russian пертурбация, from Spanish perturbar, from Latin perturbō, from Latin turbo — to enclose, fence in; to grab, seize; to stir.

imperturbability (English): A state of calm, unruffled self-assurance;...

Definitions

  1. A state of calm, unruffled self-assurance;...

Ancestry of “imperturbability”, step by step

StepLanguageWordMeaning
1EnglishperturbabilityThe quality or state of being perturbable
2EnglishperturbTo disturb; to bother or unsettle; To slightly...
3Frenchperturberto disrupt, to disturb; to throw off, to fluster
4Italianperturbareto upset, disturb, perturb
5Russianпертурбация
6Spanishperturbarto perturb, to disturb, to bother
7Latinperturbōto confuse
8Latinturbotornado, whirlwind; crowd; I disturb, unsettle,...
9Latinturbastir, disturbance, tumult, uproar, trouble; mob,...
10Ancient Greekτύρβηdisorder, confusion, tumult; poetic rout, revelry
11Proto-Indo-EuropeantwerH-to enclose, fence in; to grab, seize; to stir
Every word from Proto-Indo-European twerH-Every word from Ancient Greek τύρβηEvery word from Latin turba