Breadcrumb Home > Thesaurus > W Synonyms of waste pipe Find synonyms for: Noun1. drain, drainpipe, waste pipe, pipe, pipage, pipingusage: a pipe through which liquid is carried awayWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: temporize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language