Breadcrumb Home > Thesaurus Cite Synonyms of giantism Find synonyms for: Noun1. giantism, gigantism, overgrowth, hypertrophyusage: excessive size; usually caused by excessive secretion of growth hormone from the pituitary gland2. gigantism, giantism, largeness, bignessusage: excessive largeness of statureWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.See also: giantism (Dictionary) Related Content Daily Word Quiz: polemic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language Synonyms Index