dullness

definition: without sharpness or clearness of edge or point
example: The dullness of the pencil made their writing illegible.
speech part: noun
synonyms: bluntness
definition: lack of sensibility
example: There was a dullness in my heart.
speech part: noun
synonyms:
definition: a lack of visual brightness
example: the brightness of the orange sky was reflected in the dullness of the orange sea
speech part: noun
synonyms:
definition: the quality of lacking interestingness
example: the stories were of a dullness to bring a buffalo to its knees
speech part: noun
synonyms:
definition: the quality of being slow to understand
example:
speech part: noun
synonyms: obtuseness

How dullness is being used?