Where does “unrustable” come from?

unrustable (English) comes from English rustable, 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.

unrustable (English): Not susceptible to rust

Definitions

  1. Not susceptible to rust

Ancestry of “unrustable”, step by step

unrustable traces back through two separate lines of ancestry.

via English rustable

StepLanguageWordMeaning
1EnglishrustableSusceptible to rust
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 -lós
unrustable — Etymology, Origin & Word History | Etymology Explorer