Mo-nŏt'/o-ny, n.

n. [Gr. μονοτονία, Fr. monotonie, It. & Sp. monotonia. See supra.]

1. A frequent recurrence of the same tone or sound, producing a dull uniformity; absence of variety, as in speaking or singing.
2. An irksome sameness, or want of variety; tedious recurrence of the same actions, objects, or circumstances.

At sea, every thing that breaks the monotony of the surrounding expanse attracts attention. Irving.