dullness

noun

1. the quality of being slow to understand

   noun.cognition

   Synonyms obtuseness

   Source: WordNet 3.0

2. the quality of lacking interestingness

   noun.attribute

   Examples

   The stories were of a dullness to bring a buffalo to its knees.

   Source: WordNet 3.0

3. a lack of visual brightness

   noun.attribute

   Examples

   The brightness of the orange sky was reflected in the dullness of the orange sea.

   Antonyms brightness

   Source: WordNet 3.0

4. lack of sensibility

   noun.attribute

   Examples

   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.

   Source: WordNet 3.0

5. without sharpness or clearness of edge or point

   noun.attribute

   Examples

   The dullness of the pencil made his writing illegible.

   Synonyms bluntness

   Antonyms keenness sharpness

   Source: WordNet 3.0

6. The state of being dull; slowness; stupidity; heaviness; drowsiness; bluntness; obtuseness; dimness; want of luster; want of vividness, or of brightness.

   noun

   Source: webster1913