noun. Uniformity or lack of variation in pitch, intonation, or inflection.

noun. Tedious sameness or repetitiousness.

noun. Uniformity of tone or sound; want of inflections of voice in speaking or reading; want of cadence or modulation; monotone.

noun. Tiresome uniformity or lack of variation in any respect; sameness; want of variety.

noun. In mathematics:

noun. Continual increase, or continual decrease.

noun. Unchanging character, neither increasing nor decreasing.

noun. A frequent recurrence of the same tone or sound, producing a dull uniformity; absence of variety, as in speaking or singing.

noun. Any irksome sameness, or want of variety.

noun. Tedium as a result of repetition or a lack of variety.

noun. The property of a monotonic function.

noun. The quality of having an unvarying tone or pitch.

noun. the quality of wearisome constancy, routine, and lack of variety

noun. constancy of tone or pitch or inflection