Breadcrumb Home > Thesaurus > A Synonyms of apex Find synonyms for: Noun1. vertex, peak, apex, acme, extreme point, extreme, extremumusage: the highest point (of something); "at the peak of the pyramid"2. apex, solar apex, apex of the sun's way, celestial pointusage: the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed starsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of apex (Dictionary) ✖ Related Content Daily Word Quiz: donnybrook Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language