From BiblePortal Wikipedia

King James Dictionary [1]

Cheerful, a.

1. Lively animated having good spirits moderately joyful. This is the most usual signification of the word, expressing a degree of animation less than mirth and jollity. 2. Full of life gay animated mirthful musical as the cheerful birds. 3. Expressive of good spirits or joy lively animated.

A merry heart maketh a cheerful countenance.  Proverbs 15 .

Webster's Dictionary [2]

(a.) Having or showing good spirits or joy; cheering; cheery; contented; happy; joyful; lively; animated; willing.