Where does “unmetabolisable” come from?

unmetabolisable (English) comes from English metabolisable, from English -able, from Middle English -able, from Old French -able, from Latin -ābilis — suffixed to noun to form adjectives meaning "able to have or bring, prone to have or bring, having the power to have or bring": -able.

Ancestry of “unmetabolisable”, step by step

unmetabolisable traces back through two separate lines of ancestry.

via English metabolisable

StepLanguageWordMeaning
1EnglishmetabolisableAlternative spelling of metabolizable
2English-ableAn adjectival suffix; forms adjectives meaning
3Middle English-ableable
4Old French-ableworthy of, deserving of; -ing, creating an...
5Latin-ābilissuffixed to noun to form adjectives meaning "able to have or bring, prone to have or bring, having the power to have or bring": -able

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Latin -ābilisEvery word from English -ableEvery word from Middle English -able