pep pill peppery • peppily · · · Info · Definitions · Synonyms · Characters · · pep pill · · Text Common · · Latin · · Scripts 8 · · Length 2 · · Syllables Definitions · · · (noun) a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression. Synonyms: amphetamine, pep pill, upper, speed. · · Noun Definition 1 Synonyms · · · amphetamine · · Synonym 1 upper · · Synonym 2 speed · · Synonym 3 Characters · · space U+0020 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C p latin small letter p U+0070