/ Thesaurus / T Synonyms of tappet wrench Find synonyms for: Noun1. open-end wrench, tappet wrench, wrench, spannerusage: a wrench having parallel jaws at fixed separation (often on both ends of the handle)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language