Source : Webster's Revised Unabridged Dictionary (1913)

Harshly \Harsh"ly\, adv.
   In a harsh manner; gratingly; roughly; rudely.

         'T will sound harshly in her ears.       --Shak.

Source : WordNet®

harshly
     adv 1: in a harsh or unkind manner; "`That's enough!,' he cut in
            harshly"
     2: in a harsh and grating manner; "her voice fell gratingly on
        our ears" [syn: {gratingly}, {raspingly}]