Where does “nonsparing” come from?

nonsparing (English) comes from English non, from French non, from Old French non, from Latin nōn, from Old Latin noenum, from Proto-Indo-European óynos — one; single.

nonsparing (English): Not sparing

Definitions

  1. Not sparing

Ancestry of “nonsparing”, step by step

nonsparing traces back through two separate lines of ancestry.

via English non

StepLanguageWordMeaning
1EnglishnonObsolete form of none
2Frenchnonno; not; a no, a negative response
3Old Frenchnonno; not; Alternative form of nom
4Latinnōnnot
5Old Latinnoenum
6Proto-Indo-Europeanóynosone; single

via English sparing

StepLanguageWordMeaning
1EnglishsparingPrudent and restrained in the use of resources;...
2Dutchsparento spare; to save up
3Middle Dutchsparen
4Old Dutchsparonto spare
5Proto-GermanicsparōnąAlternative form of *sparāną
6Proto-Indo-Europeansper-to fidget, twitch; to push; to be quick; to...
Every word from Proto-Indo-European óynosEvery word from Old Latin noenumEvery word from Latin nōn