an impairment of voice, articulation of speech sounds, and/or fluency
Difficulty producing speech sounds or problems with voice quality.
A condition where a person has limited ability to communicate through speech. Without speech discribes someone with no verbal speech capacity. Do not use "mute."
Speech disorders, or speech impediments as they are also called, are a type of communication disorders where 'normal' speech is disrupted. This can mean stuttering, lisps, vocal dysphonia etc. Someone who is totally unable to speak due to a speech disorder is considered mute.