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Verb: pep up
  1. Spur on or encourage especially by cheers and shouts
    - cheer, root on, inspire, urge, barrack, urge on, exhort
  2. Make more interesting or lively
    "pep up your paper";
    - jazz up, juice up, ginger up

Derived forms: pepped up, pepping up, peps up

Type of: animate, encourage, enliven, invigorate, liven, liven up