demented

[dih-men-tid] / dɪˈmɛn tɪd /

ADJECTIVE

crazy, insane

Synonyms

STRONGEST

deranged hysterical mad maniacal manic psychotic unhinged

WEAK

bananas bemused crackbrained daft delirious distracted distraught flipped-out foolish frenzied fruity idiotic in the ozone lunatic maniac non compos mentis nutty as a fruitcake out of one's gourd out of one's tree psycho psychopathic unbalanced unglued unsound whacko

Antonyms

STRONGEST

OK balanced calm sane

WEAK

rational reasonable sensible

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.

Sam Neill stars in “Madness” as an insurance investigator who, sent to find a missing, bestselling horror author, ends up stumbling into the demented New England small town of the author’s books.

From The Wall Street Journal • Oct. 29, 2025

Last year, for instance, was a “hell hotel,” with rooms themed to demented clowns or terror at sea.

From Los Angeles Times • Oct. 28, 2025

It’s just another weekly edition of “SmackDown” in Don’s demented mind.

From Salon • Aug. 1, 2025

And you recall how you plunged with the Founder, the Leader, deep into the black art of escape, guided at first, indeed, initiated, by the seemingly demented one who had learned his craft in slavery.

From "Invisible Man" by Ralph Ellison

Vocabulary lists containing demented

Speak

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The Pigman

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"Roller Girl" by Victoria Jamieson

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