Breadcrumb Home > Thesaurus Cite Synonyms of shale Find synonyms for: Noun1. shale, sedimentary rockusage: a sedimentary rock formed by the deposition of successive layers of clayWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.See also: shale (Dictionary) Related Content Daily Word Quiz: persiflage Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language Synonyms Index