flutter

IPA: fɫˈʌtɝ

noun

  • The act of fluttering; quick and irregular motion.
  • A state of agitation.
  • An abnormal rapid pulsation of the heart.
  • (uncountable, aerodynamics) An extremely dangerous divergent oscillation caused by a positive feedback loop between the elastic deformation of an object and the aerodynamic forces acting on it, potentially resulting in rapid structural failure.
  • (Britain) A small bet or risky investment.
  • A hasty game of cards or similar.
  • (audio, electronics) The rapid variation of signal parameters, such as amplitude, phase, and frequency.

verb

  • (intransitive) To flap or wave quickly but irregularly.
  • (intransitive) Of a winged animal: to flap the wings without flying; to fly with a light flapping of the wings.
  • (intransitive, aerodynamics) To undergo divergent oscillations (potentially to the point of causing structural failure) due to a positive feedback loop between elastic deformation and aerodynamic forces.
  • (transitive) To cause something to flap.
  • (transitive) To drive into disorder; to throw into confusion.
  • (intransitive) To be in a state of agitation or uncertainty.
  • (intransitive, obsolete) To be frivolous.
  • (espionage, slang) To subject to a lie detector test.
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Examples of "flutter" in Sentences

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