-phasia is the medical terminology suffix meaning speech.
phasia is the root of speech
Tachy- meaning rapid and Tachyphasia means rapid speech
a- meaning without aphasia means absense or inability to speak.
phas- is the medical terminology combining form meaning speech
Odyn- means swallow, so odynophagia means painful swallowing.
Tachyphasia is the medical term meaning rapid speech.
Laryngopathy is the medical term meaning abnormality of the layrnx or voicebox.
ARTEREye dialect is the use of non-standard spelling for speech to draw attention to pronunciation, often in regards to the literary technique of using non-standard spelling to approximate a pronunciation that is actually no different from the standard pronunciation but has the effect of dialectal, foreign, or uneducated speech.[1][2] This form of non-standard spelling differs from others in that a difference in spelling doesn't indicate a difference in pronunciation of a word; for example, spelling was as wuz does not indicate an unusual pronunciation but is used to suggest that a character has non-standard speech of some sort as well as to alter a reader's perception of a speaker.
Echolalia is echoing or repeating speech you just heard.
The suffix usually indicates the procedure, condition, disease, or the part of speech (ex. noun, adjective, etc.)
A vocal specialist is called a Speech Therapist
The inability to speak can be termed aphasia or aphonia depending on the circumstances.
dysphonia is the voice disorder of the muscles of the larynx.
I believe that mental disorder is referred to as schizophrenia.
A person who is unable to speak is known as a mute or, in medical terms, aphasic.
For example the word hydrocephaly (hydro = water + cephal = head + y = process), means the process of water in the head. The true combining form is enceph- which means "in the head" and many times refers to the brain. Electroencephalogram (electro = electricity + encephalo = in head [brain] + gram = writing [tracing]) is a test that is run to look at the electrical activity of the brain.