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Verb: cheer up
  1. Cause (somebody) to feel happier or more cheerful
    "She tried to cheer up the disappointed child when he failed to win the spelling bee";
    - cheer, jolly along [informal], jolly up [informal], buck up [informal], jolly [informal]
  2. Become cheerful
    - cheer, buck up [informal], jolly [informal]

Derived forms: cheering up, cheered up, cheers up

Type of: joy, rejoice