/ Thesaurus / S Synonyms of spiny backed Find synonyms for: Adjective1. spiny-backed, backed (vs. backless)usage: having the back covered with spinesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language