- The quality of being slow of understanding things; stupidity.
- The quality of being uninteresting; boring or irksome.
- Lack of interest or excitement.
- The lack of visual brilliance; want of sheen.
- dullness of autumn
- (of an edge) bluntness.
- The quality of not perceiving or kenning things distinctly.
- dullness of sight, or of hearing
- (archaic) Drowsiness.
quality of being slow to understand
quality of being uninteresting
lack of visual brilliance