/ Thesaurus / I Synonyms of inflatable cushion Find synonyms for: Noun1. air cushion, inflatable cushion, cushionusage: a cushion usually made of rubber or plastic that can be inflatedWordNet 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