Definition of "pep"

pep

/pɛp/

verb
third-person singular simple present peps, present participle pepping, simple past and past participle pepped
1. (transitive) To inject with energy and enthusiasm.
  Quotations
  At least a couple of weeks since I last slept,Kept takin' sleepers, but now I keep myself pepped.
  1995, Faithless (lyrics and music), “Insomnia”
noun
countable and uncountable, plural peps
1. Energy, high spirits.
  Quotations
  She was particularly pleased with the wine, which at not infrequent intervals she tasted. Beyond all doubt it promised to be of vintage quality. Clearly the long hot summer had put more than a little pep into the berries.
  1972, H. E. Bates, The Song of the Wren