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"cheerful" is also used as a crossword clue. If that's what you saw, the answer is often chipper (7 letters).
Definitions
being full of or promoting cheer; having or showing good spirits
Word origin
From Middle English chereful, cherful, equivalent to cheer + -ful.
Used in a sentence
“Ever in cheerfullest mood art thou, when others are filled with Gloomy forebodings of illl, and see only ruin before them.”
“He moped, she felt, as the time went by, and he was cheerfuler only when some letter, full of hope without expectation, came from Dick.”
“The Eskimo is a nobler, cheerfuller and easy-goinger person than we smug civilized citizens have always imagined. Rockwell Kent, the noted Eskimophile, claims they are a polite and happy race.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“In good spirits”8 letters
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