pep up

(verb) spur on or encourage especially by cheers and shouts. Synonyms: cheer, root on, inspire, urge, barrack, urge on, exhort, pep up. Example: "The crowd cheered the demonstrating strikers."

(verb) make more interesting or lively. Synonyms: jazz up, juice up, pep up, ginger up. Examples: "Juice up a party." "Pep up your paper."