Conceptualizing Speech Fluency

From reading to rock climbing, “fluency” denotes automaticity, efficiency, and effortless action. The concept of fluency most commonly represents the knowledgeable application and proficiency of speech-language performance. In contrast, “disfluencies” are utterances associated with the interruption and self-repair of speech production. What does it mean to be fluent or disfluent? How does fluency relate to disorders of speech fluency?