/ Thesaurus / A Synonyms of amphibious aircraft Find synonyms for: Noun1. amphibian, amphibious aircraft, airplane, aeroplane, planeusage: an airplane designed to take off and land on waterWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language