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Inability to produce a smooth flow of speech sounds in connected discourse; the flow of speech is characterized by frequent interruptions and repetitions. See: stuttering.
[dis- + fluency]
Farlex Partner Medical Dictionary © Farlex 2012


Speech that exhibits deviations in continuity, fluidity, ease of rate and effort, with hesitations or repetition of sounds, words, or phrases; lack of skillfulness in speech. Disfluency is normal in pre-school language development. In later years, it can be due to congenital conditions such as Down’s syndrome, or acquired—either early, as in stuttering, or late, as may occur in Parkinson’s disease.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


, disfluency (dis-flū'ĕn-sē)
Speech interrupted in its forward flow by hesitations, repetitions, or prolongations of sounds; common manifestation of a stuttering disorder, which is also present in normal speech, particularly during speech development in young children.
See: stuttering
Synonym(s): nonfluency.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


An interruption in speech flow.
Mentioned in: Stuttering
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
For the fluency condition, the font was clear and black whereas, for the condition of disfluency, the font was a little blurry and grey.
Jun, "A comparison of disfluency patterns in normal and stuttered speech," in Disfluency in Spontaneous Speech, 2005.
A child was considered a non-stutterer if he/she exhibited two or less disfluency instances per 100 syllables of the conversational speech and had a total score equal or less than 6 (i.e., equivalent to normal or mild) according to the stuttering diagnosis criteria of SSI-3.
(43) An open-label study of haloperidol lacked disfluency frequency data, therefore casting doubts on haloperidol's reported efficacy in the study.
[22] reported that individuals with PD show greater disfluency in writing tasks involving wrist flexion than in the tasks involving wrist extension.
Normative disfluency data for early childhood stuttering.
Rule-based algorithms for each of these disfluency types have shown some success.
The king's stuttering problem was moderate and didn't show secondary characteristics, but I thought it did show the impact disfluency can have."
Peter also uses a technique called deliberate disfluency which is when you purposefully stammer to conquer the fear of stammering.
A young child between three and five goes through developmental disfluency. They are learning to speak but they stumble.