ἄφωνος

The place of the scripture which he read was this, He was led as a sheep to the slaughter; and like a lamb dumb before his shearer, so opened he not his mouth:

Ye know that ye were Gentiles, carried away unto these dumb idols, even as ye were led.

There are, it may be, so many kinds of voices in the world, and none of them is without signification.

But was rebuked for his iniquity: the dumb ass speaking with man's voice forbad the madness of the prophet.