humdrum

adjective

  1. 1

    tediously repetitious or lacking in variety

    a humdrum existence; all work and no play

    nothing is so monotonous as the sea

  2. 2

    not challenging; dull and lacking excitement

    an unglamorous job greasing engines

noun

  1. 1

    the quality of wearisome constancy, routine, and lack of variety

    he had never grown accustomed to the monotony of his work

    he was sick of the humdrum of his fellow prisoners

Synonyms

Also useful for “humdrum”:Unscrambler