jolly up

Verb
  1. Cause (somebody) to feel happier or more cheerful (synset 200860989)
    "She tried to cheer up the disappointed child when he failed to win the spelling bee"
    causes: cheer, cheer up, chirk up - become cheerful
    subtypes: amuse - make (somebody) laugh
    same as: cheer, cheer up, jolly along

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