Aphonic and Dumbstruck

Aphonic adjective - Being without sound through injury or illness and thus incapable of all but whispered speech.

Dumbstruck and aphonic are semantically related. In some cases you can use "Dumbstruck" instead an adjective "Aphonic".

Dumbstruck adjective - Affected with sudden and great wonder or surprise.

Aphonic and dumbstruck are semantically related. You can use "Aphonic" instead an adjective "Dumbstruck".