Which speech disorder is characterized by a rapid speech rate and unclear articulation?

The disorder characterized by a rapid speech rate and unclear articulation is cluttering. This condition involves a speech pattern where the individual speaks quickly and often jumbles words together, leading to unintelligibility. Unlike stuttering, which is marked by disruptions in the flow of speech, cluttering is more about the speed and organization of speech. Individuals with cluttering may also have difficulty organizing their thoughts or may not be aware of their own speech errors, contributing to their overall communication difficulties.

Cleft palate, while it can lead to speech issues, primarily affects articulation due to structural differences in the oral cavity rather than causing rapid or unclear speech. Fluency shaping refers to techniques used to help individuals speak more fluently, but it is not a disorder itself.