/ Thesaurus / F Synonyms of fictitiously Find synonyms for: Adverb1. fictitiouslyusage: in a false manner intended to mislead2. fictitiouslyusage: in a fictional manner (created by the imagination)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language