to utter a succession of small, tremulous sounds, as a bird.

to talk lightly and rapidly, esp. of trivial matters; chatter.

to titter; giggle.

to tremble with excitement or the like; be in a flutter.

to express or utter by twittering.

an act of twittering.

a twittering sound.

a state of tremulous excitement.

verb

quake , quaver , quiver , shiver , shudder , tremble , vibrate , chat , chatter , cheep , chirp , chirrup , chitter , flutter , giggle , peep , sing , sound , titter , tweet