'pep up' definitions:

Spur on or encourage especially by cheers and shouts; "The crowd cheered the demonstrating strikers" [syn: cheer, root on, inspire, urge, barrack, urge on, exhort, pep up]

Make more interesting or lively; "juice up a party"; "pep up your paper" [syn: jazz up, juice up, pep up, ginger up]