One who utters something.

plural of utterer

(uncountable) The state or quality of being expressible in words, especially audibly. / (countable) An idea or feeling which can be expressed in words.

Capable of being expressed in words, especially audibly.

plural of uttering

The state or condition of being utter.

plural of utterability

The quality of being utterable.

A surname.

(uncommon) That is uttering or speaking.