incapable

adjective

in·​ca·​pa·​ble (ˌ)in-ˈkā-pə-bəl 

1

: lacking capacity, ability, or qualification for the purpose or end in view: such as

a

: not able or fit for the doing or performance : incompetent

b

: not being in a state or of a kind to admit : insusceptible

c

archaic : not able to take in, hold, or keep

d

archaic : not receptive

2

: lacking legal qualification or power (as by reason of mental incompetence) : disqualified

incapability

(ˌ)in-ˌkā-pə-ˈbi-lə-tē 

noun

incapableness

(ˌ)in-ˈkā-pə-bəl-nəs 

noun

incapably

(ˌ)in-ˈkā-pə-blē 

adverb

Synonyms

• unfit
• incompetent
• unfitted
• unable

Examples of incapable in a Sentence

hired a supremely incapable assistant who only made a mess of things

Recent Examples on the Web

In the final debate, Cuomo and Sliwa both attacked Mamdani for his stances on Israel and sought to portray him as incapable of addressing rising antisemitism to protect Jews, who account for about a tenth of New York City. —Eduardo Cuevas, USA Today, 23 Oct. 2025

Not that either of them is incapable of that or unwilling to do it. —Bennett Durando, Denver Post, 22 Oct. 2025

Movies like Eddington and The Mastermind also render their white male protagonists as ill-prepared and ineffectual numbskulls incapable of confronting their era’s racial and social politics. —Robert Daniels, Time, 10 Oct. 2025

Domestic treble winners, WSL champions six years running, yet ineffably incapable of finding triumph in Europe. —Megan Feringa, New York Times, 7 Oct. 2025

Word History

Etymology

Middle French, from in- + capable capable

First Known Use

1594, in the meaning defined at sense 1

Rhymes for incapable

• capable
• inescapable

Kids Definition

incapable

adjective

in·​ca·​pa·​ble (ˈ)in-ˈkā-pə-bəl 

: not able to do something

incapable of cleaning her room thoroughly

incapability

(ˌ)in-ˌkā-pə-ˈbil-ət-ē 

noun

Legal Definition

incapable

adjective

in·​ca·​pa·​ble

: lacking legal qualification or power (as by reason of mental incompetence) see also incapacity