/ Thesaurus / S Synonyms of speech act Find synonyms for: Noun1. speech act, act, deed, human action, human activityusage: the use of language to perform some actWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: torrid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language