- shake rapidly back and forth flutter
- to utter successive chirping noises
- talk in a chattering fashion
- tremble with agitation flutter
- utter in chirps or twitters the robin twittered its morning song
- to utter small, tremulous sounds, as a bird
- to tremble with excitement
- twittering sound
- state of excitement
- to utter a succession of chirping sounds [v TWITTERED, TWITTERING, TWITTERS]
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