Where does “nocon” come from?

nocon (Middle Irish) comes from Old Irish nícon, from Old Irish ní, from Proto-Celtic nīs, from Proto-Indo-European ne h₁ésti — is not.

Ancestry of “nocon”, step by step

StepLanguageWordMeaning
1Old Irishníconnot
2Old Irishnínot; is not, isn’t; something, anything
3Proto-Celticnīs—
4Proto-Indo-Europeanne h₁éstiis not

Words derived from “nocon”

Every word from Proto-Indo-European ne h₁ésti →Every word from Proto-Celtic nīs →Every word from Old Irish ní →