Meaning : The attribute of urgency in tone of voice.
Example :
His voice had an edge to it.
Synonyms : edge
Meaning : The quality of being keenly and painfully felt.
Example :
The sharpness of her loss.
Meaning : The quality of being sharp and clear.
Synonyms : distinctness
The quality of being indistinct and without sharp outlines.
blurriness, fogginess, fuzziness, indistinctness, softness