Where does “nontortuous” come from?

nontortuous (English) comes from English tortuous, from Middle English tortuous, from Latin tortuōsus, from Latin tortus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

nontortuous (English): Not tortuous

Definitions

  1. Not tortuous

Ancestry of “nontortuous”, step by step

nontortuous traces back through two separate lines of ancestry.

via English tortuous

StepLanguageWordMeaning
1EnglishtortuousTwisted; having many turns; convoluted; Oblique;...
2Middle Englishtortuous
3Latintortuōsustwisting, tortuous
4Latintortustwisted, crooked; spun, whirled; bent, distorted
5Latin-tusForms the past participle of verbs; Forms...
6Proto-Italic-tus
7Proto-Indo-European-tusDerives action nouns from verb roots

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 -tus