Where does “imperturbableness” come from?

imperturbableness (English) comes from English imperturbable, 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.

imperturbableness (English): The quality of being imperturbable

Definitions

  1. The quality of being imperturbable

Ancestry of “imperturbableness”, step by step

imperturbableness traces back through two separate lines of ancestry.

via English imperturbable

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

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European h₁én