flutter.

To flap or wave quickly but irregularly.

flags fluttering in the wind

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.

To cause something to flap.

A bird flutters its wings.

To drive into disorder; to throw into confusion.

To be in a state of agitation or uncertainty.

To be frivolous.

To subject to a lie detector test.

The act of fluttering, or multiple acts thereof; the back-and-forth motion of fluttering; a state of fluttering.

The eagle soared across the horizon with just a few slow flutters of its wings. The flutter of insects and bats is more rapid. Some birds also use non-flight flutters as communication and in thermoregulation.

Fish move using a flutter of their body to propel themselves through the water. Some also derive propulsion or maneuverability from their fins' flutter.

The act of fluttering, or multiple acts thereof; the back-and-forth motion of fluttering; a state of fluttering. The collective flutter of many similar objects.

leaf flutter; feather flutter

The flutter of the flock buffeted me.

The act of fluttering, or multiple acts thereof; the back-and-forth motion of fluttering; a state of fluttering. A flapping, crackling or rustling sound, as from a fluttering motion or any comparable sound; any series of quick repetitive sounds.

I eventually found the source of the flutter, which came from clothes on a clothesline swaying with the wind.

I find the flutter of a campfire to be soothing like a lullaby.

The act of fluttering, or multiple acts thereof; the back-and-forth motion of fluttering; a state of fluttering. A flapping, crackling or rustling sound, as from a fluttering motion or any comparable sound; any series of quick repetitive sounds. A sound that spreads in the manner of a wave or ripple.

A flutter of gasps spread over the crowd.

The act of fluttering, or multiple acts thereof; the back-and-forth motion of fluttering; a state of fluttering. The rapid up-and-down movement of the eyelids, and consequently eyelashes, often seen as intentionally flirtatious or alluring and often attributed to the eyes or eyebrows.

He couldn't help but feel more attracted to her with each flutter of her eyes/lashes/eyelids.

Her eyes did a flutter.

The act of fluttering, or multiple acts thereof; the back-and-forth motion of fluttering; a state of fluttering. The movement a hand fan with a back-and-forth action using flicks of the wrist, so as to produce a graceful wave-like effect.

The flutter of the geisha's fan was elegant.

The act of fluttering, or multiple acts thereof; the back-and-forth motion of fluttering; a state of fluttering. The leg motion of various strokes in swimming, especially the flutter kick.

The flutter of your legs will propel you through the water, when you execute a proper flutter kick.

The act of fluttering, or multiple acts thereof; the back-and-forth motion of fluttering; a state of fluttering. The motion or state of falling while fluttering or falling as to produce fluttering.

Winged helicopter seeds fall with rapid flutters to the ground.

The Christmas tree fell in a flutter of ornaments and pine needles.

A quick and irregular motion or vibration, or multiple such motions.

The irregular back-and-forth flutter of this fishing lure imitates the movement of an injured or sick fish.

Palatal flutter is a cause of sleep apnea and snoring.

A quick and irregular motion or vibration, or multiple such motions. The trembling movement of an iris caused by a lack of support from the lens or as a complication of cataract surgery.

It's important to note any flutter in the iris.

A quick and irregular motion or vibration, or multiple such motions. The vibration, shaking or flapping of fabric, such as in a kite, parachute or sail; the condition of having such a flutter.

kite flutter; parachute flutter; sail flutter

Even a weak flutter can damage your sail.

A quick and irregular motion or vibration, or multiple such motions. The vibration of a bird's throat by rapidly pumping air into it with the mouth open in order to reduce excess body heat; gular flutter.

Witness the flutter of its neck, which helps to lower the bird's body temperature.

A quick and irregular motion or vibration, or multiple such motions. A method of articulation in playing wind instruments by curving the tongue at the sides and exhaling air over it to make it vibrate; flutter-tongue.

I've never been able to achieve a proper flutter on my flute.

A quick and irregular motion or vibration, or multiple such motions. Any of several vocal effects, actions, techniques or conditions, notably tremolo, vibrato and trill, which are deliberately cultivated, as well as the neurological disorder vocal tremor or general strain.

I love the flutter of the singer's voice. I could never develop the flutter needed to do that. Her flutter is excellent.

That flutter in your voice is a vocal tremor, caused by the involuntary contractions of muscles in the larynx, throat or other adjacent parts of the body.

A quick and irregular motion or vibration, or multiple such motions. An exception to, or fluctuation in, a pattern; a minor and temporary deviation from an expectation; a blip in a trend; a transient shift in allegiance.

Despite an occasional flutter, the water current still flows in the same direction as always.

Smoking rates have been going down for a long time, despite a few regional and temporary flutters.

A quick and irregular motion or vibration, or multiple such motions. A state or episode of agitation, of excited anxiety or anxious excitement, or of anticipation; an act of taking a flutter (To flutter for a short period of time) or of being all of a flutter.

in a flutter

She'd been in a flutter since receiving word that her in-laws were on the way.

A quick and irregular motion or vibration, or multiple such motions. A state or episode of agitation, of excited anxiety or anxious excitement, or of anticipation; an act of taking a flutter (To flutter for a short period of time) or of being all of a flutter. A commotion, ruckus or disturbance; a brief state of energetic activity.

From my apartment, I heard a flutter in the streets, presumably in protest of the war.

When I heard a flutter in the basement, I knew it was my daughter sneaking out to play after her bedtime.

A spasmodic vibration of one or more body parts or the entire body; a shudder.

He found his eyelid flutters annoying enough to see a doctor about them.

A flutter ran through her, but she steeled her nerves and continued.

A spasmodic vibration of one or more body parts or the entire body; a shudder. The condition or sensation of a rapid and abnormal heart rhythm; the action of a swift heartbeat.

She took her own pulse to verify the flutter she felt was real.

A flutter left him light-headed until he steadied himself by grabbing the railing.

A spasmodic vibration of one or more body parts or the entire body; a shudder. A feeling of internal shifting, which may be caused by the movement of a fetus, muscular spasms associated with digestion (or indigestion) or other phenomena, including idiosyncratic perceptions.

Was that a flutter from my soon-to-be baby or a flutter of indigestion? I couldn't tell!

So you've been feeling flutters in your belly for three days? Any other symptoms?

A spasmodic vibration of one or more body parts or the entire body; a shudder. A flash of emotion that accompanies an internal sensation, such as a rapid pulsation of the heart or a quiver of nervous disquiet; a small burst of emotion that may be felt or expressed; a fleeting feeling or idea experienced as a feeling.

He was mostly over his phobia of dogs, but sometimes the sight of a dog still gave him a flutter of terror.

Some of her father's ways still triggered flutters of that old burning resentment in her. She spoke of him with a flutter of her bitterness that others could sense.

A spasmodic vibration of one or more body parts or the entire body; a shudder. The rapid horizontal movement (saccades) of the eyes without pausing between them; ocular flutter.

That flutter in the patient's eyes means there's a neurological problem.

A spasmodic vibration of one or more body parts or the entire body; a shudder. An abnormal rapid pulsation of the heart, caused by the too-rapid beating of the upper chambers; the condition of experiencing such a flutter.

You need a cardiologist to treat this flutter in your heart. Your cardiologist will have ways of getting you out of flutter.

A spasmodic vibration of one or more body parts or the entire body; a shudder. The vibration of a heart valve; the condition of experiencing such vibrations.

I see a distinct flutter in your echocardiogram.

A spasmodic vibration of one or more body parts or the entire body; a shudder. A contraction of the diaphragm caused by synchronous diaphragmatic flutter.

The flutter has been treated, and symptoms of synchronous diaphragmatic flutter are no longer present.

A physical oscillation in a mechanical device; a state of oscillation; the action of oscillation.

I felt each flutter of the lawnmower as it struggled to start.

The needle on this gauge was in a flutter, which makes it hard to read the result.

A physical oscillation in a mechanical device; a state of oscillation; the action of oscillation. 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.

wind turbine flutter, propellor flutter, blade flutter, fan flutter, fin flutter, whirl flutter, wing flutter

The flutter characteristics of the new design suggest that it will hold up well in real-world conditions.

A physical oscillation in a mechanical device; a state of oscillation; the action of oscillation. The sound created when the throttle body in an engine is closed, forcing air through the turbocharger in the wrong direction, which makes the air bounce against the compressor blades, stalling them; the condition of having this occur in an engine.

You have a compressor surge, I could hear the flutter in your engine. I can show you how to fix the flutter.

A physical oscillation in a mechanical device; a state of oscillation; the action of oscillation. The shaking of a vehicle or part of a vehicle, especially when caused by the engine surging, stalling or fluctuating in RPM.

The flutters are a sign that something is seriously wrong with your car.

A fluctuation in sound, especially a malfunction in technology.

The bird's song was full of trills and flutters.

I can hear a flutter in this movie's soundtrack.

A fluctuation in sound, especially a malfunction in technology. A wavering quality in a voice, usually suggesting a specified feeling.

I heard a flutter when she spoke.

He said he could do it, but the flutter in his voice told me he lacked confidence.

A fluctuation in sound, especially a malfunction in technology. The sound of a camera shutter opening to let in light when taking a picture, or the sound of a camera app that simulates the same thing.

The explosion of flutters behind me let me know the paparazzi were here.

A fluctuation in sound, especially a malfunction in technology. A sound distortion in film, as in an old movie, caused by variable film speed across the sound head.

A lot of people find the flutter of film to be an annoying distraction.

A fluctuation in sound, especially a malfunction in technology. The distortion in a cassette recording, especially the distortion caused by variations in the speed of the magnetic tape due to sticking and slipping during playback or recording.

The flutter is part of the appeal for cassette enthusiasts.

A fluctuation in sound, especially a malfunction in technology. The rapid variation of signal parameters, such as amplitude, phase, and frequency, caused by variations in the speed of the playback from a record player; the condition of having such variation.

I maintain all of the equipment in tiptop condition, so there's no wow or flutter.

He diagnosed my system's flutter.

A fluctuation in sound, especially a malfunction in technology. The sound created by a flutter echo.

The flutter in this room is from the hard, parallel walls.

A fluctuation in sound, especially a malfunction in technology. The pulsating sound created by the phase distortion caused by the simultaneous playback of two frequencies.

The two recordings aren't synced up well enough to get rid of that flutter.

A fluctuation in sound, especially a malfunction in technology. The sound distortion created by a turntable picking up subsonic interference.

A fluctuation in sound, especially a malfunction in technology. The sound distortion created by vibrations in a speaker; speaker flutter.

I finally solved the flutter from that speaker.

A flicker or fluctuation in light; a type of visual distortion.

The flutter of the lamplight cast a romantic glow on the room.

The flutter effect strains my eyes.

A flicker or fluctuation in light; a type of visual distortion. A malfunction in the image on a television, monitor or screen, which may be fluctuations in brightness, bands of distortion or a flickering or blurry quality; the condition of displaying such a malfunction.

I hate watching that TV, because of its flutter.

A flicker or fluctuation in light; a type of visual distortion. A jumping or flickering effect in a film or a video, which may come from damage to the film or to defects in the recording, such as a shaky camera, or which may be a digital effect that simulates such conditions.

The flutter on those old movies makes it hard to see the details.

A speculative endeavor, especially a small one; an act of taking a flutter (To support a risky option.).

A speculative endeavor, especially a small one; an act of taking a flutter (To support a risky option.). An attempt or try.

We had a flutter on the project, but we didn't get very far on it.

A speculative endeavor, especially a small one; an act of taking a flutter (To support a risky option.). An act of foxhunting.

We should have luck with a flutter over the north field.

A speculative endeavor, especially a small one; an act of taking a flutter (To support a risky option.). A small bet or risky investment, especially from a rookie gambler; an act of taking a flutter (To place a small bet.).

I fancied a flutter, and I won eighty pounds on it.

A speculative endeavor, especially a small one; an act of taking a flutter (To support a risky option.). A hasty or casual game, e.g. of cards.

We usually just have a flutter after dinner, but once the game is through, we all go to our rooms.

One or more objects or phenomena that flutter, that move as if fluttering, that appear to be fluttering or that cause fluttering; something fluttery.

The castle was adorned with ribbons, flags and other flutters that waved in the stiff wind.

One or more objects or phenomena that flutter, that move as if fluttering, that appear to be fluttering or that cause fluttering; something fluttery. A state of being amid or decorated in items that flutter.

One or more objects or phenomena that flutter, that move as if fluttering, that appear to be fluttering or that cause fluttering; something fluttery. A flurry of snow, smoke, dust, etc., or a light rain shower, or another phenomenon experientially similar to a light burst of rain or snow.

A flutter of snow covered the landscape in a thin layer of white.

One or more objects or phenomena that flutter, that move as if fluttering, that appear to be fluttering or that cause fluttering; something fluttery. A breeze or wind that might cause an item to flutter.

The flag was hanging limp all day, until a flutter made it stand up and ripple for a few seconds.

One or more objects or phenomena that flutter, that move as if fluttering, that appear to be fluttering or that cause fluttering; something fluttery. The flow and feel of a garment or outfit, particularly a woman's dress or gown, which moves or appears likely to move in a graceful and airy manner when worn, especially in a light breeze.

The flutter of that gown is characteristic of the designer's style. Its flutter means it looks best in a light breeze.

One or more objects or phenomena that flutter, that move as if fluttering, that appear to be fluttering or that cause fluttering; something fluttery. A feature of clothing (often lace) intended to flutter, such as flaps, straps, trim, etc.

On this gown, flutters of red on the shoulders and arms provide visual interest.

One or more objects or phenomena that flutter, that move as if fluttering, that appear to be fluttering or that cause fluttering; something fluttery. A group of butterflies or moths.

The flutter that passed us by was made up of monarch butterflies.

One or more objects or phenomena that flutter, that move as if fluttering, that appear to be fluttering or that cause fluttering; something fluttery. A combination of steam and water visible at the top gauge cock of a steam-boiler.

The flutter in that gauge-cock makes it hard to see what the correct water level is.

A small amount or a small sign of something.

The nuns prayed on the matter daily, sending flutters of devotion to the heavens.

Everywhere he saw flutters of war and knew the rumors of peace were mere idle talk.

A small amount or a small sign of something. A fragment or flash of a color or of light or sound.

Amid the flutters of sunshine drifting through the dense canopy, I spotted my target.

Here on the painting we see flutters of blue, suggesting the sky beyond.

A small amount or a small sign of something. A scrap or fragment of, e.g., rumors, history, sentiment, etc.

I asked around and heard nothing concrete, just flutters of accusations of bad behavior.

Despite the lack of written records, we have dredged up a few flutters of information about that era of history.