Definition from Wiktionary, the free dictionary
- Insane or mentally ill.
2012 August 5, Nathan Rabin, “TV: Review: THE SIMPSONS (CLASSIC): “I Love Lisa” (season 4, episode 15; originally aired 02/11/1993)”:
- So while Ralph generally seems to inhabit a different, more glorious and joyful universe than everyone else here his yearning and heartbreak are eminently relateable. Ralph sometimes appears to be a magically demented sprite who has assumed the form of a boy, but he’s never been more poignantly, nakedly, movingly human than he is here.
- Suffering from dementia.
- (informal) Crazy; ridiculous.
- a demented idea
insane or mentally ill
suffering from dementia
- simple past tense and past participle of