This taciturnity is not to be confounded with the paranoic aphrasia in certain insane persons -- e. g., in catatonia, where the will is paralyzed.    From Wordnik.com.  [The Mind of the Child, Part II The Development of the Intellect, International Education Series Edited By William T. Harris, Volume IX.] Reference

N. - loss of voice. aphonic, adj. aphrasia.    From Wordnik.com.  [xml's Blinklist.com] Reference