Fluster vs. Flutter — What's the Difference?

To make agitated, excited, or confused

(of a bird or other winged creature) fly unsteadily or hover by flapping the wings quickly and lightly

To become agitated, excited, or confused

An act of fluttering

A state of agitation, excitement, or confusion

A small bet

(dated) To make hot and rosy, as with drinking.

To wave or flap rapidly in an irregular manner

(by extension) To confuse; befuddle; throw into panic by making overwrought with confusion.

To fly by a quick light flapping of the wings.

(intransitive) To be in a heat or bustle; to be agitated and confused.

To flap the wings without flying.

A state of being flustered; overwrought confusion.

To move or fall in a manner suggestive of tremulous flight

To make hot and rosy, as with drinking; to heat; hence, to throw into agitation and confusion; to confuse; to muddle.

To vibrate or beat rapidly or erratically

To be in a heat or bustle; to be agitated and confused.

To move quickly in a nervous, restless, or excited fashion; flit.

Heat or glow, as from drinking; agitation mingled with confusion; disorder.

To cause to flutter

A disposition that is confused or nervous and upset

The act of fluttering.

Be flustered; behave in a confused manner

A condition of nervous excitement or agitation

Cause to be nervous or upset

A commotion; a stir.

(Medicine) Abnormally rapid pulsation, especially of the atria or ventricles of the heart.

Rapid fluctuation in the pitch of a sound reproduction resulting from variations in the speed of the recording or reproducing equipment.

Chiefly British A small bet; a gamble

(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.

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.

To be frivolous.

To subject to a lie detector test.

The act of fluttering; quick and irregular motion.

A state of agitation.

An abnormal rapid pulsation of the heart.

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.

(British) A small bet or risky investment.

A hasty game of cards or similar.

The rapid variation of signal parameters, such as amplitude, phase, and frequency.

To vibrate or move quickly; as, a bird flutters its wings.

To drive in disorder; to throw into confusion.

The act of fluttering; quick and irregular motion; vibration; as, the flutter of a fan.

Hurry; tumult; agitation of the mind; confusion; disorder.

The act of moving back and forth

Abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block

A disorderly outburst or tumult;

The motion made by flapping up and down

Move along rapidly and lightly; skim or dart

Move back and forth very rapidly;

Beat rapidly;

Wink briefly;