What does "cheerful" mean?

Cheerful: Having or showing good spirits or joy; cheering; cheery; contented; happy; joyful; lively; animated; willing. To entertain a cheerful disposition. Shak. The cheerful birds of sundry kind Do chant sweet music. Spenser. A cheerful confidence in the mercy of God. Macaulay. This general applause and cheerful shout. Shak.

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