/ Thesaurus / H Synonyms of hermit crab Find synonyms for: Noun1. hermit crab, decapod crustacean, decapodusage: small soft-bodied marine crustaceans living in cast-off shells of gastropodsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language