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1. Move along rapidly and lightly; skim or dart
   - flit, fleet, dart
    
2. Move back and forth very rapidly
   - flicker, waver, flitter, quiver
    
3. Flap the wings rapidly or fly with flapping movements
   "The seagulls fluttered overhead"
    
4. Beat rapidly
   - palpitate
    
5. Wink briefly
   - bat

1. The act of moving back and forth
   - waver, flicker
    
2. Abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block
    
3. A disorderly outburst or tumult
   - disturbance, disruption, commotion, hurly burly, to-do, hoo-ha, hoo-hah, kerfuffle
    
4. The motion made by flapping up and down
   - flap, flapping, fluttering
    
5. (informal) a small bet

Derived forms: flutters, fluttering, fluttered

Type of: arrhythmia, beat, blink, cardiac arrhythmia, disorder, flap, hurry, motility, motion, move, move back and forth, movement, nictate, nictitate, pound, speed, thump, travel rapidly, undulation, wave, wink, zip

Encyclopedia: Flutter