monotonous

monotonous
    adj 1: tediously repetitious or lacking in variety; "a humdrum
           existence; all work and no play"; "nothing is so
           monotonous as the sea" [syn: {humdrum}, {monotonous}]
    2: sounded or spoken in a tone unvarying in pitch; "the owl's
       faint monotonous hooting" [syn: {flat}, {monotone},
       {monotonic}, {monotonous}]
    

Monotonous \Mo*not"o*nous\, a. [Gr. ?; mo`nos alone, single + ?
   tone. See {Tone}.]
   Uttered in one unvarying tone; continued with dull
   uniformity; characterized by monotony; without change or
   variety; wearisome. -- {Mo*not"o*nous*ly}, adv. --
   {Mo*not"o*nous*ness}, n.
   [1913 Webster]
    

113 Moby Thesaurus words for "monotonous":
      alliterating, alliterative, articulated, assonant, banal, banausic,
      belabored, blah, boring, broken-record, catenated, ceaseless,
      chanting, chiming, cliche-ridden, colorless, commonplace,
      concatenated, connected, constant, continual, continued,
      continuing, continuous, cyclical, dim, dingdong, direct, drab,
      drearisome, dreary, dry, dryasdust, dull, dusty, endless,
      everlasting, everyday, featureless, gapless, gray, harping, ho-hum,
      humdrum, immediate, incessant, interminable, invariable,
      jingle-jangle, jog-trot, jogtrot, joined, jointless, labored,
      linked, long-winded, mechanical, monotone, monotonic, never-ending,
      nonstop, ordinary, pedestrian, perennial, periodic, poky, prolix,
      prosaic, recurrent, repetitious, repetitive, rhymed, rhyming,
      round-the-clock, routine, run-of-the-mill, running, same, samely,
      seamless, serried, singsong, sleep-inducing, smooth, soporific,
      stable, steady, stodgy, straight, tedious, tiresome, tiring,
      treadmill, twenty-four-hour, unbroken, unceasing, undifferentiated,
      unending, uneventful, unexciting, uniform, uninteresting,
      unintermitted, unintermittent, unintermitting, uninterrupted,
      unrelieved, unremitting, unstopped, unvaried, unvarying, wearisome,
      wearying