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Definitions

incapable

[in-key-puh-buhl] / ɪnˈkeɪ pə bəl /
ADJECTIVE
not adequate; helpless
Synonyms
STRONGEST
impotent inadequate incompetent ineffective ineligible naive powerless unable unfit unqualified unsuited weak
WEAK
butterfingers disqualified feeble inept inexperienced inexpert inproficient insufficient losing not equal to not up to poor uncool unequipped unskilled unskillful
Antonyms
STRONGEST
able adequate capable competent effective experienced fit potent qualified ready skillful strong sufficient suitable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Vance, though, is clearly incapable of such a spontaneous response.

From Salon • Apr. 1, 2026

Today’s news suggests that cybersecurity firms are potentially incapable of protecting clients against bad actors using AI.

From Barron's • Mar. 27, 2026

Those encounters can make them look incapable of managing their lives even when the core problem is the absence of stable housing.

From Slate • Mar. 12, 2026

"And he seems incapable of providing that basic information."

From BBC • Mar. 11, 2026

Emily Tallis had always been incapable of small talk and didn’t much care.

From "Atonement" by Ian McEwan

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.