Breadcrumb Home > Thesaurus > H Synonyms of horizontal Find synonyms for: Noun 1. horizontal, orientation usage: something that is oriented horizontally Adjective 1. horizontal (vs. vertical) (vs. inclined), crosswise, flat, level, naiant, swimming usage: parallel to or in the plane of the horizon or a base line; "a horizontal surface" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of horizontal (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: felicitous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language