Where does “unfalling” come from?

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

unfalling (English): not falling, not tending to fall

Definitions

  1. not falling, not tending to fall

Ancestry of “unfalling”, step by step

unfalling traces back through two separate lines of ancestry.

via English falling

StepLanguageWordMeaning
1Englishfallingpresent participle of fall; That falls or fall;...
2Englishfall"To be moved downwards."; "To move downwards.";...
3Middle Englishfall
4Old EnglishfeallAlternative form of fiell
5Proto-Germanicfallą
6Proto-Indo-European(s)pōl-to fall

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European (s)pōl-
unfalling — Etymology, Origin & Word History | Etymology Explorer