dullness

Noun

• without sharpness or clearness of edge or point
  • the dullness of the pencil made his writing illegible
    

• lack of sensibility
  • there was a dullness in his heart
    
  • without him the dullness of her life crept into her work no matter how she tried to compartmentalize it.
    

• a lack of visual brightness
  • the brightness of the orange sky was reflected in the dullness of the orange sea
    

• the quality of lacking interestingness
  • the stories were of a dullness to bring a buffalo to its knees
    

• the quality of being slow to understand

Related words

• Synonyms: 
  bluntness , obtuseness
• Antonyms: 
  asperity , sharpness , keenness , brightness