monotonous

  • (s) tediously repetitious or lacking in variety
    • a humdrum existence; all work and no play
    • nothing is so monotonous as the sea
    humdrum,
  • (s) sounded or spoken in a tone unvarying in pitch
    • the owl's faint monotonous hooting
    monotone, monotonic, flat,

Synonyms

humdrum monotone monotonic flat

Words of close approximity

monotonously