flutter

1 of 2

verb

flut·​ter ˈflə-tər How to pronounce flutter (audio)
fluttered; fluttering; flutters
Synonyms of flutternext

intransitive verb

1
: to flap the wings rapidly
butterflies fluttering among the flowers
2
a
: to move with quick wavering or flapping motions
a sail fluttering in the wind
b
: to vibrate in irregular spasms
his heart fluttered
3
: to move about or behave in an agitated aimless manner
She nervously fluttered around the office.

transitive verb

: to cause to flutter
The bird was fluttering its wings.
flutterer noun
fluttery adjective

flutter

2 of 2

noun

1
: an act of fluttering
2
a
: a state of nervous confusion or excitement
c
: abnormal spasmodic fluttering of a body part
treatment of atrial flutter
3
a
: a distortion in reproduced sound similar to but of a higher pitch than wow
b
: fluctuation in the brightness of a television image
4
: an unwanted oscillation (as of an aileron or a bridge) set up by natural forces
5
chiefly British : a small speculative venture or gamble

Examples of flutter in a Sentence

Verb The bird was fluttering its wings. The bird's wings were fluttering. We watched the butterflies fluttering in the garden. Leaves fluttered to the ground. The breeze made the curtains flutter. The breeze fluttered the curtains. She fluttered her eyelashes at him. She nervously fluttered around the office. Noun With a flutter of wings, the birds settled into the nest. The flutter of the flame cast shadows on the ceiling. He was in a flutter until he found his keys. The news of her resignation caused quite a flutter. have a flutter on a horse in the second race
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Verb
In the end, the town promises a simpler life, sipping strong espressos beneath fluttering palm trees. Dana Sauchelli, Travel + Leisure, 22 Jan. 2026 Butterflies and hummingbirds flutter about and two turkey vultures—with their six-foot wingspans—soar overhead. Devorah Lev-Tov, Condé Nast Traveler, 19 Jan. 2026
Noun
Lundell recalls identifying a distinct flutter a second before a particular panel failed, captured in videos from the trailer and the wind tunnel. Deni Ellis Béchard, Scientific American, 13 Jan. 2026 At the end of the trial, those who continued caffeinated coffee experienced a 47% recurrence rate of AF or atrial flutter, compared with 64% in the caffeine-abstinent group, translating to about a 39% lower risk of recurrence for coffee drinkers. New Atlas, 2 Jan. 2026 See All Example Sentences for flutter

Word History

Etymology

Verb and Noun

Middle English floteren to float, flutter, from Old English floterian, frequentative of flotian to float; akin to Old English flēotan to float — more at fleet

First Known Use

Verb

before the 12th century, in the meaning defined at intransitive sense 1

Noun

1641, in the meaning defined at sense 1

Time Traveler
The first known use of flutter was before the 12th century

Browse Nearby Words

Cite this Entry

“Flutter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flutter. Accessed 28 Jan. 2026.

Kids Definition

flutter

1 of 2 verb
flut·​ter ˈflət-ər How to pronounce flutter (audio)
1
: to move or cause the wings to move rapidly without flying or in short flights
butterflies flutter
2
: to move with quick wavering or flapping motions
flags fluttered in the breeze
3
: to move about or behave in an excited aimless manner
fluttery adjective

flutter

2 of 2 noun
1
: an act of fluttering
2
3
: an unsteadiness of pitch in reproduced sound

Medical Definition

flutter

noun
flut·​ter ˈflət-ər How to pronounce flutter (audio)
: an abnormal rapid spasmodic and usually rhythmic motion or contraction of a body part
diaphragmatic flutter
affected with ventricular flutter
flutter intransitive verb

More from Merriam-Webster on flutter

Last Updated: - Updated example sentences
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