Breadcrumb Home > Thesaurus > H Synonyms of hi Find synonyms for: Noun 1. hello, hullo, hi, howdy, how-do-you-do, greeting, salutation usage: an expression of greeting; "every morning they exchanged polite hellos" 2. Hawaii, Hawai'i, Aloha State, HI usage: a state in the United States in the central Pacific on the Hawaiian Islands WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of hi (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: picaresque Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language