Where does “nongradual” come from?

nongradual (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.

nongradual (English): Not gradual; occurring suddenly

Definitions

  1. Not gradual; occurring suddenly

Ancestry of “nongradual”, step by step

nongradual 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 gradual

StepLanguageWordMeaning
1EnglishgradualProceeding or advancing by small, slow, regular...
2Medieval Latingradualis—
3Latingradusa step, pace; a stage, degree; a rank
4Proto-Italicgraðus—
5Proto-Indo-Europeangʰradʰ-—
Every word from Proto-Indo-European óynos →Every word from Old Latin noenum →Every word from Latin nōn →