demented

adjective

de·​ment·​ed di-ˈmen-təd How to pronounce demented (audio)
1
: mad, insane
The advertising campaign for the movie version is trying to sell it as a prankish comedy, with the eccentric aunt who appears from nowhere as a demented Mary Poppins. Pauline Kael
… the violence was instigated directly by Serbian nationalists in Bosnia and in Belgrade as part of their demented project to separate the two intermixed ethnic communities once and for all, Charles Simic
2
: affected by or exhibiting cognitive dementia
At least one-third of people serving as caregivers for a demented husband or wife become chronically depressed. Bennett D. Gurian
dementedly adverb
dementedness noun

Example Sentences

Many of the patients there were demented. In the movie, he plays a demented man trying to survive on the streets of Los Angeles. Her demented ramblings are a symptom of her illness. He gave me a demented little smile. parents who are almost demented with worry
Recent Examples on the Web One of the most notorious cult classics of all time, Capcom’s God Hand was a brutally hard brawler with a demented sense of humor from the brilliant mind of Shinji Mikami. K. Thor Jensen, PCMAG, 10 Nov. 2022 But the hate — and the demented ideology — that has killed their neighbors and wounded a city forever has many sources of power. Margaret Sullivan, Washington Post, 17 May 2022 Chez Goodman is a demented palace of nouveau-riche aesthetic extravagance, the polar opposite of the clean, understated elegance of Howard Hamlin's mid-century home. Kat Rosenfield, EW.com, 19 Apr. 2022 When Crutcher instigates a plan to punish a student for his parents’ relentless pressure to change their son’s grade, Crutcher is pitched against three students out to uncover his demented schemes with a few of their own. Carole E. Barrowman, Milwaukee Journal Sentinel, 13 May 2021 Rinee has a wonderfully distinctive and demented style. Wired Staff, Wired, 18 Mar. 2021 But there’s also a level of precision and progressiveness to the power delivery that makes the whole demented package work surprisingly well. Basem Wasef, Car and Driver, 15 Dec. 2020 But this book is a lot more demented than a simple whodunnit. Megan Mccarthy, USA TODAY, 28 Mar. 2020 And where there are two Harley Quinns, the original, quite sane Harleen Quinzel, and a doppelganger, the demented Marian Drews. cleveland, 9 May 2020 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'demented.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

from past participle of dement "to deprive of reason, drive mad," borrowed from Medieval Latin dēmentāre, going back to Late Latin, "to deceive, hoodwink," verbal derivative of Latin dēment-, dēmens "out of one's mind, frenzied, insane" — more at dementia

First Known Use

1632, in the meaning defined at sense 1

Time Traveler
The first known use of demented was in 1632

Dictionary Entries Near demented

Cite this Entry

“Demented.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/demented. Accessed 1 Dec. 2022.

Kids Definition

demented

adjective

de·​ment·​ed di-ˈment-əd How to pronounce demented (audio)
dementedly adverb

Medical Definition

demented

adjective

de·​ment·​ed di-ˈment-əd How to pronounce demented (audio)
: affected by or exhibiting cognitive dementia
dementedly adverb
dementedness noun

More from Merriam-Webster on demented

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