/ Thesaurus / A Synonyms of amphetamine sulphate Find synonyms for: Noun1. amphetamine sulfate, amphetamine sulphate, amphetamine, pep pill, upper, speedusage: a sulfate derivative of amphetamine that is used as a stimulant for the central nervous systemWordNet 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