/ Thesaurus / S Synonyms of smooth shelled Find synonyms for: Adjective1. smooth-shelled, shelled (vs. unshelled)usage: having a smooth shellWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language