n. [ Gr. &unr_;: cf. F. monotonie. See Monotonius. ] 1. A frequent recurrence of the same tone or sound, producing a dull uniformity; absence of variety, as in speaking or singing. [ 1913 Webster ]
2. Any irksome sameness, or want of variety. [ 1913 Webster ]
At sea, everything that breaks the monotony of the surrounding expanse attracts attention. W. Irving. [ 1913 Webster ]