Where does “unflappableness” come from?

unflappableness (English) comes from English unflappable, from English Un-, from Middle English un-, from Old English un-, from Proto-West Germanic un-, from Proto-Germanic un-, from Proto-Indo-European n̥-, from Proto-Indo-European ne — not.

unflappableness (English): Unflappability

Definitions

  1. Unflappability

Ancestry of “unflappableness”, step by step

unflappableness traces back through two separate lines of ancestry.

via English unflappable

StepLanguageWordMeaning
1EnglishunflappableRemaining composed and level-headed at all times;...
2EnglishUn-not
3Middle Englishun-
4Old Englishun-negation or absence of: un-, non-; bad; forms...
5Proto-West Germanicun-not, un-
6Proto-Germanicun-not, un-
7Proto-Indo-Europeann̥-not, un-
8Proto-Indo-Europeannenot

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 neEvery word from English Un-Every word from Proto-Indo-European n̥-