/ Thesaurus / I Synonyms of iron pyrite Find synonyms for: Noun1. pyrite, iron pyrite, fool's gold, mineralusage: a common mineral (iron disulfide) that has a pale yellow colorWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language