piercingly

from WordNet (r) 3.0 (2006)

piercingly
    adv 1: extremely and sharply; "it was bitterly cold"; "bitter
           cold" [syn: {piercingly}, {bitterly}, {bitingly},
           {bitter}]
    2: in a shrill voice; "she sang rather shrilly" [syn: {shrilly},
       {piercingly}]

from The Collaborative International Dictionary of English v.0.48

Piercing \Pier"cing\, a.
   Forcibly entering, or adapted to enter, at or by a point;
   perforating; penetrating; keen; -- used also figuratively;
   as, a piercing instrument, or thrust. "Piercing eloquence."
   --Shak.
   [1913 Webster] -- {Pier"cing*ly}, adv. -- {Pier"cing*ness},
   n.
   [1913 Webster]