Incapable of, or indisposed to, effective action; habitually slack or unproductive; effecting little or nothing
Not efficient; not producing the effect intended or desired; inefficacious
A person who cannot or does not work efficiently.
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.