- crazy; insane; mad.
- affected with dementia.
Origin of demented
SynonymsSee more synonyms for demented on Thesaurus.com
1. lunatic, crazed, deranged, unbalanced.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for dementedly
"The Guard" is a cross between Quentin Tarantino and Edgar Wright—and one of the most dementedly fun movies screened so far.Gleeson Delivers as Schlubby, Corrupt Cop
January 21, 2011
After 10 minutes or so, all but the dementedly committed grown-ups will feel they have done their duty to democracy.Is This the Death of American Idol?
May 27, 2010
- mad; insane
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for dementedly
1640s, from obsolete dement "drive mad."
Online Etymology Dictionary, © 2010 Douglas Harper
- Mentally ill; insane.
- Suffering from dementia.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.