utterable (not comparable)
- Capable of being expressed in words, especially audibly.
- 1850, Herman Melville, White Jacket, ch. 92,
- An utterable nausea oppressed me.
- 1917, Jack London, Jerry of the Islands, ch. 20,
- In his vocabulary was no word for "crocodile"; yet in his thought, as potent as any utterable word, was an image of dreadful import.
- Oxford English Dictionary, 2nd ed., 1989.