/ Thesaurus / P Synonyms of peneplane Find synonyms for: Noun1. peneplain, peneplane, plain, field, champaignusage: a more or less level land surface representing an advanced stage of erosion undisturbed by crustal movementsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language