Breadcrumb Home > Thesaurus > P Synonyms of permafrost Find synonyms for: Noun1. permafrost, land, ground, soilusage: ground that is permanently frozenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of permafrost (Dictionary) ✖ Related Content Daily Word Quiz: solecism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language