Pronunciation: (pep'ur-up'ur), [key]
1. something, as a food, beverage, or pill, that provides a quick but temporary period of energy and alertness.
2. something added to food to relieve blandness.
3. an experience that increases enthusiasm or zeal, as a pep talk. Also,pep'per up'per.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.