/ Thesaurus / K Synonyms of khi Find synonyms for: Noun1. chi, khi, letter, letter of the alphabet, alphabetic characterusage: the 22nd letter of the Greek alphabetWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language