In a way that is attractive, charming, or endearing, often in a clever or playful manner.
From 'cute' (attractive, clever) + '-ly' (adverb suffix). 'Cute' originated in the 18th century as a shortening of 'acute,' meaning clever.
Cute used to mean 'sharp-witted'—so when someone acts 'cutely,' they're being cleverly charming, not just superficially adorable.
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