dysfluency

noun

dys·​flu·​en·​cy

variant spelling of disfluency

1

: an involuntary disruption in the flow of speech that may occur during normal childhood development of spoken language or during normal adult speech but is most often symptomatic of a speech impairment

especially : a disorder of vocal communication that is marked by frequent involuntary disruption or blocking of speech (as by repetition of all or part of a word or by prolonging vocal sounds) and typically has an onset during childhood : stuttering

2

: an act or instance of disfluency : stutter