Where does “nonsynonymy” come from?

nonsynonymy (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.

nonsynonymy (English): The quality of not being synonymous

Definitions

  1. The quality of not being synonymous

Ancestry of “nonsynonymy”, step by step

nonsynonymy 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 synonymy

StepLanguageWordMeaning
1EnglishsynonymyThe quality of being synonymous; sameness of...
2Frenchsynonymiesynonymy
Every word from Proto-Indo-European óynos →Every word from Old Latin noenum →Every word from Latin nōn →