demented

[ dih-men-tid ]

adjective

1. crazy; insane; mad.

   Synonyms: unbalanced, deranged, crazed, lunatic

2. affected with dementia.

demented

/ dɪˈmɛntɪd /

adjective

1. mad; insane

Derived Forms

• deˈmentedly, adverb
• deˈmentedness, noun

Other Words From

• de·mented·ly adverb
• de·mented·ness noun
• half-de·mented adjective
• semi·de·mented adjective

Word History and Origins

Origin of demented¹

First recorded in 1635–45; dement + -ed ²

Example Sentences

He acted deranged and demented on the campaign trail and it changed nothing.

From Salon

Is it a case of rote journalistic convention that turns Trump’s demented ravings into something resembling the blandly acceptable “policy statements” of a typical gladhanding pol?

From Salon

Trump denies it, and his minions called Woodward demented and deranged.

From Salon

In his earlier incarnations on the page and screen, the Penguin was a demented society swell whose signature accouterments were a top hat, a monocle and a trick umbrella.

From Los Angeles Times

But it's the truly demented and/or incoherent blather that's going unremarked upon and there is no excuse for it.

From Salon

Related Words

• deranged
• hysterical
• mad
• maniacal
• manic
• psychotic
• unhinged