1. A stimulant of some kind; that which quickly imparts energy and alertness. I find that yerba mate tea is a much better pepper-upper than coffee—it gives you the same boost, without making you feel jittery or on-edge.
2. Something that increases enthusiasm, optimism, or eagerness. I hate these public speakers they bring in—they're meant to be pepper-uppers, but they just come across as totally phony to me.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. an amphetamine tablet or capsule; a pep pill. I need me a little pepper-upper. Can I have a prescription?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.