/ Thesaurus / I Synonyms of in full action Find synonyms for: Adverb1. in full swing, in full actionusage: proceeding with full vigor; "the party was in full swing"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language