variants or dysfluency
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
disfluent adjective
or dysfluent
a disfluent child
dysfluent speech

Examples of disfluency in a Sentence

Recent Examples on the Web
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Additionally, slowing down the reading speed to deal with the disfluency may also increase the likelihood of spotting errors in a text. Carla Delgado, Discover Magazine, 9 Oct. 2021 Because font disfluency may benefit information retention, a team of designers and behavioral scientists from the RMIT University created Sans Forgetica, a hard-to-read font that was specifically designed to invoke deeper processing. Carla Delgado, Discover Magazine, 9 Oct. 2021

Word History

First Known Use

1961, in the meaning defined at sense 1

Time Traveler
The first known use of disfluency was in 1961

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Cite this Entry

“Disfluency.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/disfluency. Accessed 10 Mar. 2025.

Medical Definition

disfluency

noun
dis·​flu·​en·​cy
plural disfluencies
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
disfluent adjective
a disfluent child
dysfluent speech
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