demented

de·ment·ed  (d-mntd)

adj.

1. Mentally ill; insane.

2. Suffering from dementia or a loss of cognitive function.

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de·mented·ly adv.

de·mented·ness n.

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demented [dɪˈmɛntɪd]

adj

(Psychiatry) mad; insane

dementedly  adv

dementedness  n

Thesaurus

Adj.

1.

demented - affected with madness or insanity; "a man who had gone mad" brainsick, crazy, unhinged, unbalanced, mad, sick, disturbed insane - afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter"

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demented

adjective mad, crazy, foolish, daft (informal), frenzied, distraught, manic, insane, crazed, lunatic, unbalanced, deranged, idiotic, unhinged, dotty (slang, chiefly Brit.), loopy (informal), crackpot (informal), out to lunch (informal), barking mad (slang), barking (slang), maniacal, gonzo (slang), doolally (slang), off your trolley (slang), up the pole (informal), non compos mentis (Latin), not the full shilling (informal), crackbrained, wacko or whacko (slang) Her warnings were dismissed as the ramblings of a demented old woman.
sane, sound, normal, reasonable, sensible, rational, all there (informal), lucid, compos mentis (Latin), in your right mind

Translations

demented [dɪˈmentɪd] ADJ → demente (fig) → loco

demented [dɪˈmɛntɪd] adj

(= mentally ill) [person] → dément(e)

(= crazy) [person, laughter] → fou*(folle)

demented

adj → verrückt, wahnsinnig; demented with worry → verrückt vor Angst

demented [dɪˈmɛntɪd] adj → folle, demente

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demented [dɪˈmɛntɪd] adj → folle, demente