1) Inarticulate 2) Lacking phonation 3) Mouthed but not spoken 4) Mouthed but unspoken 5) Noiseless 6) Silent 7) Unarticulate 8) Unvoiced 9) Voiceless 10) Without voice Found on https://www.crosswordclues.com/clue/aphonic
aphonia, aphonias, aphonic 1. A total loss of the voice and of all but whispered speech as a result of hysteria, disease, or overuse of the vocal cords; inability to produce vocal sound.2. Loss of the voice as a result of a disease, injury, or a structural abnormality. Found on http://www.wordinfo.info/words/index/info/view_unit/2737/2