Where does “nonroof” come from?

nonroof (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.

nonroof (English): Not of or pertaining to a roof

Definitions

  1. Not of or pertaining to a roof

Ancestry of “nonroof”, step by step

nonroof 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 Roof

StepLanguageWordMeaning
1EnglishRoofA Chinese constellation located near Aquarius and Pegasus, one of the 28 lunar mansions and part of the larger Black Turtle
2Middle EnglishrofA roof; A house or building; a edifice used for...
3Old Englishhrōfroof, ceiling; top, summit; heaven, sky
4Proto-Germanichrōfąroof
5Proto-Indo-Europeankrāpo-
6Proto-Indo-Europeankrāwə-to cover, heap
Every word from Proto-Indo-European óynosEvery word from Old Latin noenumEvery word from Latin nōn