aphemia

Aphemia, a-fŧm′i-a, n. loss of speech caused by difficulty in articulation due to paralysis.

He has suffered a concussion over the third frontal convolution, resulting in an aphasia—aphemia we are sure of, and doubtless also agraphia——" "Hold on!

This blow has produced the aphemia.

Now, he knows he can talk because we all know he can, but no one knows it at present because he can't—and that's aphemia.

Centro-motor Dysphasia and Aphasia, Aphemia, Asymbolia, Asemia.—Children have not yet learned, or have hardly learned, the use of language, although their intelligence is already sufficient.