Aphonic and Understood

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

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

Understood adjective - Implied by or inferred from actions or statements.

Aphonic and understood are semantically related. Sometimes you can use "Aphonic" instead an adjective "Understood".