/ Thesaurus / R Synonyms of rashly Find synonyms for: Adverb1. headlong, rashlyusage: in a hasty and foolhardy manner; "he fell headlong in love with his cousin"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language