humdrum

Adjective

• tediously repetitious or lacking in variety; all work and no play"
  • a humdrum existence
    
  • nothing is so monotonous as the sea
    

• not challenging; dull and lacking excitement
  • an unglamorous job greasing engines
    

Noun

• 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
    
  • he hated the sameness of the food the college served
    

Related words

• Synonyms: 
  monotonous , commonplace , prosaic , unglamorous , unglamourous , monotony , sameness