Definition of incompetent
- incompetent heart valves
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.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'incompetent.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use: 1595See Words from the same year
: lacking necessary ability or skills
law : not able to take part in a trial
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