Un fluttering


verb (used without object)
to wave, flap, or toss about: Banners fluttered in the breeze.
to flap the wings rapidly; fly with flapping movements.
to move in quick, irregular motions; vibrate.
to beat rapidly, as the heart.
to be tremulous or agitated.
to go with irregular motions or aimless course: to flutter back and forth.
verb (used with object)
to cause to flutter; vibrate; agitate.
to throw into nervous or tremulous excitement; cause mental agitation; confuse.
a fluttering movement: He made little nervous flutters with his hands.
a state of nervous excitement or mental agitation: a flutter of anticipation.
Audio. a variation in pitch resulting from rapid fluctuations in the speed of a recording. Compare wow2 ( def 1 ).
Chiefly British. a small wager or speculative investment.

before 1000; Middle English floteren, Old English floterian, frequentative of flotian to float

flutterer, noun
flutteringly, adverb
unfluttered, adjective
unfluttering, adjective

2. See fly1. 10. flurry, twitter, stir, dither.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
flutter (ˈflʌtə)
1.  to wave or cause to wave rapidly; flap
2.  (intr) (of birds, butterflies, etc) to flap the wings
3.  (intr) to move, esp downwards, with an irregular motion
4.  (intr) pathol (of the auricles of the heart) to beat abnormally rapidly, esp in a regular rhythm
5.  to be or make nervous or restless
6.  (intr) to move about restlessly
7.  swimming to cause (the legs) to move up and down in a flutter kick or (of the legs) to move in this way
8.  informal (Brit) (tr) to wager or gamble (a small amount of money)
9.  a quick flapping or vibrating motion
10.  a state of nervous excitement or confusion
11.  excited interest; sensation; stir
12.  informal (Brit) a modest bet or wager
13.  pathol an abnormally rapid beating of the auricles of the heart (200 to 400 beats per minute), esp in a regular rhythm, sometimes resulting in heart block
14.  electronics a slow variation in pitch in a sound-reproducing system, similar to wow but occurring at higher frequencies
15.  a potentially dangerous oscillation of an aircraft, or part of an aircraft, caused by the interaction of aerodynamic forces, structural elastic reactions, and inertia
16.  swimming See flutter kick
17.  music Also called: flutter tonguing a method of sounding a wind instrument, esp the flute, with a rolling movement of the tongue
[Old English floterian to float to and fro; related to German flattern; see float]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

O.E. floterian "float to and fro, be tossed by waves," freq. of fleotan "to fleet" (see fleet (n.)). Related: Fluttered; fluttering.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

flutter flut·ter (flŭt'ər)
Abnormally rapid pulsation, especially of the atria or ventricles of the heart.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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