1 (wiktionary) 2 (de.wikipedia) 3 (en.wikipedia) 4 (glosbe)

Verbs Nouns Adjectives/Adverbs Pronouns Prepositions Conjunctions
unable (Advanced search)

NGSL3000 unable Not being able to do something adj

Tanaka6000 unable

incunable {n} (very early printed book, specifically one printed before 1501; an incunabulum) unable {adj} (not able)

I was unable to look her in the face .
I am unable to agree on that point .
Such being the case , he is unable to pay .
She was unable to come because of illness .
He is unable to do it .
It seems that he is unable to swim .