/ Thesaurus / B Synonyms of blattella germanica Find synonyms for: Noun1. German cockroach, Croton bug, crotonbug, water bug, Blattella germanica, cockroach, roachusage: small light-brown cockroach brought to United States from Europe; a common household pestWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language