Breadcrumb Home > Thesaurus > E Cite Synonyms of eightieth Find synonyms for: Noun1. eightieth, rankusage: position 80 in a countable series of thingsAdjective1. eightieth, 80th, ordinal (vs. cardinal)usage: the ordinal number of eighty in counting orderWordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.Definition and meaning of eightieth (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. February 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress Noble Titles and Ranks in a Monarchy Keeping Your Brain Active in a COVID-19 World The Manchu Related Content Daily Word Quiz: syncretism Analogy of the Day: Today?s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language