fatally

1 :  in a way determined by fate

2 :  in a manner suggesting fate or an act of fate: such asa :  in a manner resulting in death :  mortally fatally woundedb :  beyond repair :  irrevocablyc :  in a manner resulting in ruin or evil it is fatally easy to pass off our prejudices as our opinions — W. F. Hamblyd :  in a manner that cannot be easily resisted thinks she is fatally attractive — J. W. Krutch