n. | 1. | The state of being dull; slowness; stupidity; heaviness; drowsiness; bluntness; obtuseness; dimness; want of luster; want of vividness, or of brightness. |
Noun | 1. | dullness - the quality of being slow to understand Synonyms: dulness, obtuseness |
2. | dullness - the quality of lacking interestingness Synonyms: dulness | |
3. | dullness - a lack of visual brightness Synonyms: dulness Antonyms: brightness - the location of a visual perception along the black-to-white continuum | |
4. | dullness - without sharpness of edge or point |