pep someone up

pep up

1. To increase or enhance someone's excitement, interest, energy, or alertness. A noun or pronoun can be used between "pep" and "up." The show was going really poorly until the host came out and pepped the audience up. I think I need some coffee to pep me up.
2. To make something more interesting, engaging, or exciting. A noun or pronoun can be used between "pep" and "up." I always use some red chilies to pep up my soups and stews. Have you considered using electric guitars to pep the song up a bit?
See also: pep, up
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

pep someone up

Invigorate someone or cheer someone up, as in This drink will pep you up, or The good news about his recovery pepped us up. [1920s] Both the verb pep and the noun pep, denoting vigor and energy since about 1910, are abbreviations for pepper, a spice with a pungent, biting quality. They also have given rise to pep rally, a meeting to inspire enthusiasm [c. 1940], and pep talk, a speech meant to instill enthusiasm or bolster morale [1920s].
See also: pep, someone, up
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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