资料来源 : Webster's Revised Unabridged Dictionary (1913)

Withering \With"er*ing\, a.
   Tending to wither; causing to shrink or fade. --
   {With"er*ing*ly}, adv.

资料来源 : WordNet®

witheringly
     adv : in a withering manner; "guns fired witheringly at the
           railroad cars"