lacking variety; boring; dull

a humdrum existence.

humdrum character or routine; monotony.

monotonous or tedious talk.

Archaic . a dull, boring person.

adjective

busy , eventful , exciting , lively , unusual

adjective

arid , banausic , blah , bromidic , common , commonplace , dim , dime a dozen , drab , dreary , dull , everyday , garden-variety , insipid , lifeless , monotone , monotonous , mundane , ordinary , pedestrian , plodding , prosy , repetitious , routine , tedious , tiresome , toneless , treadmill , uninteresting , unvaried , vanilla * , wearisome , white-bread , drear , dry , irksome , stuffy , weariful , weary , boring , indifferent , prosaic , soso , tedium , tiresome.--n. monotony , trite , uneventful , unexciting

noun

monotone , monotonousness , sameness