Breadcrumb Home > Thesaurus > S Synonyms of straightedge Find synonyms for: Noun1. straightedge, hand toolusage: hand tool consisting of a flat rigid rectangular bar (metal or wood) that can be used to draw straight lines (or test their straightness)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of straightedge (Dictionary) ✖ Related Content Daily Word Quiz: hieratic Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language