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.

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.

flutter kick.

Audio . a variation in pitch resulting from rapid fluctuations in the speed of a recording. Compare wow 2 ( def. 1 ) .

Chiefly British . a small wager or speculative investment.

verb

agitate , bat , beat , dance , drift , flicker , flit , flitter , flop , fluctuate , hover , lop , oscillate , palpitate , pulsate , quaver , quiver , ripple , ruffle , shake , shiver , swing , throb , tremble , vibrate , wiggle , wobble , fly , wave , flap , sail , wing , waggle , fan , flurry , thrill , tingling , twitter , vacillate , volitate , waver

noun

dither , fluster , perturbation , tumult , turmoil , upset