pep up

Verb

• make more interesting or lively
  • juice up a party
    
  • pep up your paper
    

• spur on or encourage especially by cheers and shouts
  • The crowd cheered the demonstrating strikers
    

Related words

• Synonyms: 
  jazz up , juice up , ginger up , cheer , root on , inspire , urge , barrack , urge on , exhort