Where does “unthreadable” come from?

unthreadable (English) comes from English threadable, from English able, from Middle English able, from Old French able, from Latin habilis, from Latin -ilis, from Proto-Italic -elis, from Proto-Indo-European -elis — Forms agent nouns from verbal roots.

unthreadable (English): Not threadable

Definitions

  1. Not threadable

Ancestry of “unthreadable”, step by step

unthreadable traces back through two separate lines of ancestry.

via English threadable

StepLanguageWordMeaning
1EnglishthreadableSuitable for multithreading; That has a route...
2EnglishableEasy to use; Suitable; competent; Liable to
3Middle Englishablecapable, expert, qualified, skilful, competent
4Old Frenchableable; capable
5Latinhabilisable to have/possess/maintain; having sufficient...
6Latin-ilis-ile
7Proto-Italic-elis
8Proto-Indo-European-elis
9Proto-Indo-European-lósForms agent nouns from verbal roots

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European -lósEvery word from Latin -ilisEvery word from Latin habilis