Where does “untortuous” come from?

untortuous (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.

untortuous (English): Not tortuous

Definitions

  1. Not tortuous

Ancestry of “untortuous”, step by step

untortuous 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 un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European -tusEvery word from Latin -tusEvery word from Latin tortus
untortuous — Etymology, Origin & Word History | Etymology Explorer