1. Noun
The state of being dull; slowness; stupidity; heaviness; drowsiness; bluntness; obtuseness; dimness; want of luster; want of vividness, or of brightness.
2. Noun
the quality of being slow to understand
Vocabulary classified under Medicine and healthcare
3. Noun
the quality of lacking interestingness; "the stories were of a dullness to bring a buffalo to its knees"
Vocabulary classified under Environmental science
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