Definition of "monotony"

monotony

/məˈnɑtəni/

noun
plural monotonies
1. Tedium as a result of repetition or a lack of variety.
  Quotations
  It matters little to trace the rapidity of the land journey, or the monotony of the sea voyage—alike unmarked by adventure. Robert Evelyn landed at Southampton,...
  1834, L[etitia] E[lizabeth] L[andon], chapter II, in Francesca Carrara. […], volume I, London: Richard Bentley, […], (successor to Henry Colburn), page 24
  Yet second-hand romance and second-hand emotion are surely better than the dull, soul-killing monotony which life brings to most of the human race.
  1907, Arthur Conan Doyle, chapter 1, in Through the Magic Door‎, archived from the original on 12 April 2011
2. (mathematics) The property of a monotonic function.
3. The quality of having an unvarying tone or pitch.