The meaning of UNABLE is not able : incapable. How to use unable in a sentence.

(Definition of unable from the Cambridge Academic Content Dictionary © Cambridge University Press)

If you are unable to do something, it is impossible for you to do it, for example because you do not have the necessary skill or knowledge, or because you do not have enough time or money.

Definition of unable adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

WordReference Random House Unabridged Dictionary of American English © 2025 un•a•ble (un ā′ bəl), adj. lacking the necessary power, competence, etc., to accomplish some specified act: He was …

Jan 14, 2026 · Adjective unable (comparative unabler or more unable, superlative unablest or most unable) Not able; lacking a certain ability. Are you unable to mind your own business or something?

UNABLE definition: lacking the necessary power, competence, etc., to accomplish some specified act. See examples of unable used in a sentence.

lacking the necessary power, competence, etc., to accomplish some specified act: unable to swim.

unable definition: lacking the skill, means, or opportunity to do something. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like "unable to help", …

unable: Lacking the necessary power, authority, or means; not able; incapable.