incompetent
adjective
in·com·pe·tent
(ˌ)in-ˈkäm-pə-tənt 
1
a
: lacking the qualities needed for effective action : lacking necessary ability or skills
b
: unable to function properly
incompetent heart valves
2
: not legally qualified
After hearing psychiatrist … witnesses … the court found Edwards incompetent to stand trial …—
Indiana v. Edwards, 554 U.S. 164 (2008)
Indiana v. Edwards, 554 U.S. 164 (2008)3
: inadequate to or unsuitable for a particular purpose
incompetent
noun
incompetently
adverb
Examples of incompetent in a Sentence
He is too incompetent to be trusted with such an important responsibility.
The patient is mentally incompetent.
The defendant was declared incompetent to stand trial.
Recent Examples on the Web
Our mayor appointed an incompetent team that indirectly caused Palisades, crippled prevention and destroyed Palisades.
—Teresa Liu, Daily News, 4 May 2026
And these people in charge aren't just economically incompetent.
—ABC News, 3 May 2026
From an ideological standpoint, the new flag was introduced at the exact time the citizens of this state were just getting a grip on the outrageously incompetent management of the state’s money, dereliction that allowed billions of their tax dollars to be lost to fraud.
—Joe Soucheray, Twin Cities, 2 May 2026
There was a sense that the people in charge of the operation were incompetent or, worse, deliberately prevaricating.
—Jessica Camille Aguirre, New Yorker, 2 May 2026
See All Example Sentences for incompetent
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Teresa Liu, Daily News, 4 May 2026
And these people in charge aren't just economically incompetent.
—ABC News, 3 May 2026
From an ideological standpoint, the new flag was introduced at the exact time the citizens of this state were just getting a grip on the outrageously incompetent management of the state’s money, dereliction that allowed billions of their tax dollars to be lost to fraud.
—Joe Soucheray, Twin Cities, 2 May 2026
There was a sense that the people in charge of the operation were incompetent or, worse, deliberately prevaricating.
—Jessica Camille Aguirre, New Yorker, 2 May 2026
See All Example Sentences for incompetent
Cite this Entry
“Incompetent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/incompetent. Accessed 9 May. 2026.
Copy CitationMedical Definition
incompetent
adjective
in·com·pe·tent
(ˈ)in-ˈkäm-pət-ənt
1
: not legally qualified
especially
: incapable due to a mental or physical condition
2
: unable to function properly
incompetent heart valves
incompetently
adverb
Legal Definition
incompetent
1 of 2 adjective
in·com·pe·tent
in-ˈkäm-pə-tənt
1
: not legally qualified: as
a
: lacking legal capacity (as because of age or mental deficiency)
b
: incapable due to mental or physical condition compare competent
c
: lacking authority, power, or qualifications required by law
an incompetent court
incompetent evidence
2
: unable or failing to perform adequately
fired for being incompetent
an incompetent attorney
compare ineffective assistance of counsel
incompetent
2 of 2 noun
: a person who is incompetent compare interdict
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