/ Thesaurus / L Synonyms of lash up Find synonyms for: Noun1. lash-up, contrivance, arrangementusage: any improvised arrangement for temporary useWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language