fatally

from WordNet (r) 3.0 (2006)

fatally
    adv 1: with fatal consequences or implications; "he was fatally
           ill equipped for the climb"

from The Collaborative International Dictionary of English v.0.48

Fatally \Fa"tal*ly\, adv.
   1. In a manner proceeding from, or determined by, fate.
      --Bentley.
      [1913 Webster]

   2. In a manner resulting in death or ruin; mortally;
      destructively; as, fatally deceived or wounded.
      [1913 Webster]