Where does “unexpectable” come from?

unexpectable (English) comes from English expectable, 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.

unexpectable (English): Not to be expected; unusual or unpredictable

Definitions

  1. Not to be expected; unusual or unpredictable

Ancestry of “unexpectable”, step by step

unexpectable traces back through two separate lines of ancestry.

via English expectable

StepLanguageWordMeaning
1EnglishexpectableAble to be expected
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
unexpectable — Etymology, Origin & Word History | Etymology Explorer