humdrum

Meanings

• the quality of wearisome constancy, routine, and lack of variety
  • "he was sick of the humdrum of his fellow prisoners"
• not challenging; dull and lacking excitement
• tediously repetitious or lacking in variety
  • "a humdrum existence; all work and no play"

Synonyms

commonplace, monotonous, monotony, prosaic, sameness, unglamorous, unglamourous