Being, or having the salient properties of, a monotone function.
Having a single unvaried pitch.
To speak in a monotone.
A piece of writing in one strain throughout.
A single unvaried tone of speech or a sound.
Having a covert or hidden meaning.
Reasonably large in number or amount.
Having a low probability of occurring by chance (for example, having high correlation and thus likely to be related).
Having a noticeable or major effect.
Signifying something; carrying meaning.
That which has significance; a sign; a token; a symbol.