c. 1400, "full of cheer, having good spirits," from cheer (n.) + -ful. Meaning "elevating the spirits" is from mid-15c. Related: Cheerfully; cheerfulness.
a cheerful greeting
as cheerful as anyone confined to a hospital bed could be
a cheerful room
her cheerful nature
cheek
cheeks
cheeky
cheep
cheer
cheerful
cheerio
cheerleader
cheerless
cheers
cheery
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