An abrupt breaking-off in speech, often indicated in print using an ellipsis (…) or an em dash (—).
An instance of stuttering.
A speech disorder in which the flow of speech is disrupted by involuntary repetitions and prolongations of sounds, syllables, words or phrases, and by involuntary silent pauses or blocks in which the stutterer is unable to produce sounds.
Hesitant.
That stutters.