Where does “unnegatable” come from?

unnegatable (English) comes from English negatable, 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.

unnegatable (English): That cannot be negated

Definitions

  1. That cannot be negated

Ancestry of “unnegatable”, step by step

unnegatable traces back through two separate lines of ancestry.

via English negatable

StepLanguageWordMeaning
1EnglishnegatableCapable of being negated
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