Breadcrumb Home > Thesaurus > O Synonyms of overarch Find synonyms for: Verb 1. overarch, predominate, dominate, rule, reign, prevail usage: be central or dominant; "This scene overarches the entire first act" 2. overarch, arch over usage: form an arch over; "Big rocks overarch the stream" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of overarch (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: parallax Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language