denseness
den-ness
noun
The state of being slow to understand or perceive; stupidity.
"His denseness was frustrating during the explanation."
noun
The quality of being compact, thick, or closely packed together.
"The denseness of the fog made driving hazardous."
Thesaurus
Synonyms: density, slow-wittedness, dumbness, tightness, compactness, concentration
Antonyms: dispersion, distribution