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English definition of “flutter”

flutter

verb [I/T]    /ˈflʌt̬·ər/
to move in quick, irregular motions, or to cause something to move this way: [I] The flags fluttered in the breeze. If your heart flutters, it beats faster than usual, often from excitement.
(Definition of flutter verb from the Cambridge Academic Content Dictionary © Cambridge University Press)
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