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"whimsical" is also used as a crossword clue. If that's what you saw, the answer is often capricious (10 letters).
Definitions
determined by chance or impulse or whim rather than by necessity or reason
Word origin
From whimsy + -ical.
Used in a sentence
“Mr. Sherlock Holmes was leaning back in his chair after his whimsical protest, and was unfolding his morning paper in a leisurely fashion, […].”
“Her lips wavered into a smile—she had been distracted by the whimsical remembrance of the confidences she had made to him, two years earlier, in that very room.”
“Lovers of the movies may well date a new screen era from the day those whimsical pantomimers set their wholesome and humane talent at the service of the arc light and the lens.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Playfully odd”9 letters
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