/ Thesaurus / D Synonyms of dementedly Find synonyms for: Adverb1. insanely, crazily, dementedly, madlyusage: in an insane manner; "she behaved insanely"; "he behaves crazily when he is off his medication"; "the witch cackled madly"; "screaming dementedly"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language