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cheer someone up
to make a sad person happy. When Bill was sick, Ann tried to cheer him up by reading to him. Interest rates went up, and that cheered up all the bankers.
[for a sad person] to become happy. After a while, she began to cheer up and smile more. Cheer up! Things could be worse.
cheer up (somebody)also cheer somebody up
to feel happier, or to cause someone to feel happier We've cheered up a lot since we found a great place to swim. Jack stopped at her apartment every day to bring her food and cheer her up.
Become or make happy, raise the spirits of, as in This fine weather should cheer you up. This term may also be used as an imperative, as Shakespeare did ( 2 Henry IV, 4:4): "My sovereign lord, cheer up yourself." [Late 1500s]
1. To become happier or more cheerful: I cheered up once the weather got warmer.
2. To make someone happier or more cheerful: The fine spring day cheered me up. The hospital staged a musical to cheer up the sick patients.