1. to move lightly and quickly; flap rapidly
2. to move about or behave in an agitated aimless manner
3. to beat rapidly or irregularly
Usage: often used of the heart

1. a quick flapping or vibrating motion
2. a state of nervous excitement or agitation

Examples

• The butterfly’s wings flutter in the breeze.
• Flags flutter from the rooftops.
• She fluttered around the room, unable to sit still.
• His heart began to flutter with nervousness.
• The flutter of wings could be heard in the trees.
• There was a flutter of excitement when the celebrity arrived.
• The curtains flutter whenever the window is open.