A person unable to speak is sometimes known as "mute" - in the old days, they were called "dumb", as in "deaf and dumb" but that has kind of fallen out of favor.
Also called "aphasic"
Aphasic describes someone with aphasia, an absence of speech.
Aphasia, Mutism
This is called aphasia.
Not speaking clearly can lead to misunderstandings and miscommunications. It's important to articulate words and enunciate properly to ensure that your message is delivered accurately. Practice vocal exercises to improve pronunciation and clarity in speech.
The inability to speak can be termed aphasia or aphonia depending on the circumstances.
The inability to speak...
Unable to move inability to speak inability to write inability to make educated decisions
Aphonia is the inability to speak, or the temporary loss of voice.
inability
Kleptomania
Masked facies is the term meaning inability or reduced ability to show facial expressions. It is a sign of Parkinson's.
Tetany is the medical term meaning inability to relax the muscles.
Oration is the term. To orate is to speak
Pyromania
incontinence