/ Thesaurus / A Synonyms of alpha and omega Find synonyms for: Noun1. alpha and omega, eternity, infinityusage: the first and last; signifies God's eternity2. alpha and omega, crux, crux of the matterusage: the basic meaning of something; the crucial partWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language