Where does “crestfallenness” come from?

crestfallenness (English) comes from English crestfallen, from English fallen, from English fall, from Middle English fall, from Old English feall, from Proto-Germanic fallą, from Proto-Indo-European (s)pōl- — to fall.

crestfallenness (English): The quality of being crestfallen

Definitions

  1. The quality of being crestfallen

Ancestry of “crestfallenness”, step by step

crestfallenness traces back through two separate lines of ancestry.

via English crestfallen

StepLanguageWordMeaning
1EnglishcrestfallenSad because of a recent disappointment;...
2Englishfallenpast participle of fall; Having dropped by the...
3Englishfall"To be moved downwards."; "To move downwards.";...
4Middle Englishfall
5Old EnglishfeallAlternative form of fiell
6Proto-Germanicfallą
7Proto-Indo-European(s)pōl-to fall

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 (s)pōl-