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pep someone or something up
to make someone or something more vigorous. Nancy needs to take some vitamins to pep her up. The coffee break pepped up the tired workers. Better food might pep your cat up.
pep somebody/something upalso pep up somebody/something
to make someone or something more active or exciting With her energy and enthusiasm, she may be able to pep up the company's sales. She was always busy trying either to pep someone up or calm someone down.
1. To cause something to become more exciting or interesting: A little spice will pep up the flavor of the stew. We could use a good comedian to pep this party up!
2. To cause someone to become more alert and energetic: I drank coffee to pep myself up as the night wore on. A little music might pep up our bored guests.