The Collaborative International Dictionary
Aphonous
Aphonic \A*phon"ic\, Aphonous \Aph"o*nous\, a. Without voice; voiceless; nonvocal; incapable of all but whispered speech.
Wiktionary
aphonous
a. Without a voice; voiceless; aphonic.
Usage examples of "aphonous".
But mute doesn't mean pick and choose, it means mute, tongue-tied, aphonous, and don't forget it.