/ Thesaurus / F Synonyms of family astacidae Find synonyms for: Noun1. Astacidae, family Astacidae, Astacura, arthropod familyusage: crayfishWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: malady Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language