/ Thesaurus / I Synonyms of inclined plane Find synonyms for: Noun1. inclined plane, machine, simple machineusage: a simple machine for elevating objects; consists of plane surface that makes an acute angle with the horizontalWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language