mentally ill

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adjective

having a mental illness.

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noun (used with a plural verb)

mentally ill persons collectively (usually preceded by the).

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

cracked crazed crazy cuckoo daft demented deranged insane loco loony lunatic mad nuts nutty paranoid psycho psychopathic psychotic touched unbalanced

Examples from the Web for mentally ill

Contemporary Examples

Sometimes the question is how mentally-ill people got access to guns.
In Between Mass Shootings, the Media Have Been MIA on Guns
Howard Kurtz
December 17, 2012