The Collaborative International Dictionary
Aphrasia
Aphrasia \A*phra"si*a\, n. [NL., fr. Gr. 'a priv. + fra`sis speech.] (Med.)
= Dumbness.
A disorder of speech in which words can be uttered but not intelligibly joined together.
Wiktionary
aphrasia
n. (context pathology English) Condition of being unable to speak.