/ Thesaurus / I Synonyms of installment buying Find synonyms for: Noun1. installment plan, installment buying, time plan, regular paymentusage: a system for paying for goods by installmentsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language