/ Thesaurus / D Synonyms of dextroamphetamine sulphate Find synonyms for: Noun1. dextroamphetamine sulphate, Dexedrine, amphetamine, pep pill, upper, speedusage: an isomer of amphetamine (trade name Dexedrine) used as a central nervous system stimulantWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: bibliophile Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language