Breadcrumb Home > Thesaurus > F Synonyms of firstborn Find synonyms for: Noun 1. firstborn, eldest, offspring, progeny, issue usage: the offspring who came first in the order of birth Adjective 1. firstborn, eldest, first (vs. last) usage: first in order of birth; "the firstborn child" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of firstborn (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: soupon Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language