dullness
nounUK /ˈdʌlnəs/
US /ˈdʌlnəs/
Dullness is when something is not bright, sharp, or exciting.
The dullness of the gray sky made the whole day feel sleepy.
OTHER MEANINGS
2. The quality of not being sharp, as of a blade or edge.
The dullness of the old knife made it hard to cut the bread.
3. A lack of brightness or shine on a surface.
She polished the silver to remove its dullness.
4. A lack of interest or liveliness in a person or event.
The dullness of the lecture made several students yawn.