Where does “nonconsistency” come from?

nonconsistency (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.

nonconsistency (English): Quality of not being consistent

Definitions

  1. Quality of not being consistent

Ancestry of “nonconsistency”, step by step

nonconsistency 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 consistency

StepLanguageWordMeaning
1EnglishconsistencyLocal coherence; Correspondence or compatibility;...
Every word from Proto-Indo-European óynosEvery word from Old Latin noenumEvery word from Latin nōn