Unable to be understood; unintelligible.
Incapable or deprived of physical sensation.
Unable to be perceived by the senses.
Incapable of mental feeling; indifferent.
Not sensible or reasonable; meaningless.
Incapable of emotional feeling; callous; apathetic.
Being, or having the salient properties of, a monotone function.
Having a single unvaried pitch.
A piece of writing in one strain throughout.
A single unvaried tone of speech or a sound.
To speak in a monotone.