What does dysfluency mean?
Dysfluency is a noun for an interruption or abnormality in the smooth flow of speech. In its specialist sense, it refers to disruptions such as stuttering, cluttering, atypical repetitions, excessive pauses, and sudden substitutions or revisions while speaking. Speech-language pathologists use the term when assessing and describing patterns that may affect communication, although not every hesitation qualifies as a clinical dysfluency. In less technical writing, dysfluency can also describe a momentary stumbling over words or an awkward break in verbal expression. The word is related to fluency, meaning ease and smoothness of movement or expression, while the prefix dys- adds the sense of difficulty or abnormality. It is useful because it gives a precise label for experiences that are familiar to almost everyone but can range from an ordinary pause to a significant speech pattern.
nounA disruption in the smooth flow of speech, especially when speaking aloud. In speech-language pathology, it refers to atypical breakdowns such as stuttering, cluttering, excessive pauses, or repetitions.
- A disruption or impairment in the smooth flow of speech, especially as studied in speech-language pathology.
- Figuratively, an interruption or lack of fluency in speech, writing, or verbal expression.
"The speech therapist helped the student reduce the dysfluencies that were making conversation difficult."
"The child’s dysfluency decreased after several weeks of structured speech-language therapy."
"After a brief dysfluency, the presenter recovered and continued the discussion."
The plural is dysfluencies, especially when referring to individual instances or patterns of disrupted speech.
"The clinician tracked the number of dysfluencies during the child’s sustained speech sample."
Dysfluency names the moment speech loses its momentum: a pause, repetition, or stumble that can reveal much about how language is being processed.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does dysfluency come from?
Dysfluency was formed in 19th-century English by combining dys-, meaning bad, difficult, or abnormal, with fluency, meaning the quality of flowing easily. The element dys- comes from Greek dys-, while fluency ultimately derives from Latin fluere, “to flow,” through the related Latin word fluentia. The resulting word therefore literally conveys difficulty in the flow of speech or expression.
Related word forms
How dysfluency is actually used
The term is especially common in clinical and educational discussions of speech and language. Outside those contexts, it can sound more technical than expressions such as hesitation or stumble, and it may imply a clinically significant difficulty.
Easily confused with dysfluency
Dysfluency concerns interruptions in the flow of speech, whereas dysphasia is a language disorder affecting the production or comprehension of speech.