/ Thesaurus / S Synonyms of special effects Find synonyms for: Noun1. special effect, effectusage: an effect used to produce scenes that cannot be achieved by normal techniques (especially on film)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language