Where does “onfall” come from?

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

onfall (English): A falling on or upon; an attack, onset, or...

Definitions

  1. A falling on or upon; an attack, onset, or...

Ancestry of “onfall”, step by step

onfall traces back through two separate lines of ancestry.

via English fall

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

via Middle English onfal

StepLanguageWordMeaning
1Middle Englishonfal
Every word from Proto-Indo-European (s)pōl-Every word from Proto-Germanic falląEvery word from Old English feall