Breadcrumb Home > Thesaurus > O Synonyms of oh Find synonyms for: Noun 1. Ohio, Buckeye State, OH usage: a midwestern state in north central United States in the Great Lakes region WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of oh (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: crepuscular Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language