Breadcrumb Home > Thesaurus > O Synonyms of octogenarian Find synonyms for: Noun 1. octogenarian, oldster, old person, senior citizen, golden ager usage: someone whose age is in the eighties Adjective 1. octogenarian, old (vs. young) usage: being from 80 to 89 years old WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of octogenarian (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: tintinnabulation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language