Breadcrumb Home > Thesaurus > P Synonyms of pan american day Find synonyms for: Noun1. Pan American Day, April 14, dayusage: a day celebrating political and economic unity among American countriesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: legerdemain Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language