Where does “untwitchable” come from?

untwitchable (English) comes from English twitchable, 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.

untwitchable (English): Unable to be visited and viewed by birders

Definitions

  1. Unable to be visited and viewed by birders

Ancestry of “untwitchable”, step by step

untwitchable traces back through two separate lines of ancestry.

via English twitchable

StepLanguageWordMeaning
1EnglishtwitchableAble to be visited and viewed by birders
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