Where does “nonfavorable” come from?

nonfavorable (English) comes from English favorable, from English favourable, from Old French favorable, from Latin favorabilis, from Latin favor, from Latin -or, from Proto-Italic -ōs, from Proto-Indo-European -ōs — Creates action nouns or result nouns from verbs;...

nonfavorable (English): Not favorable

Definitions

  1. Not favorable

Ancestry of “nonfavorable”, step by step

nonfavorable traces back through two separate lines of ancestry.

via English favorable

StepLanguageWordMeaning
1EnglishfavorableAlternative form of favourable
2EnglishfavourablePleasing, encouraging or approving; Useful or...
3Old Frenchfavorable
4Latinfavorabilisfavored, popular
5Latinfavorgood will, inclination, partiality, favor;...
6Latin-orused to form a third-declension masculine...
7Proto-Italic-ōsCreates masculine action nouns or result nouns...
8Proto-Indo-European-ōsCreates masculine and feminine action nouns or...
9Proto-Indo-European-oss
10Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

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
Every word from Proto-Indo-European -osEvery word from Latin -orEvery word from Latin favor