/ Thesaurus / S Synonyms of stock market index Find synonyms for: Noun1. stock index, stock market index, index, index number, indicant, indicatorusage: index based on a statistical compilation of the share prices of a number of representative stocksWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language