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.
Having no real substance, value, or importance; empty; void; worthless; unsatisfying.
Overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments with slight reason.
Showy; ostentatious.
Effecting no purpose; pointless, futile.