Definition of "fatally"

Witness our too much memorable shameWhen Cressy battle fatally was struck,And all our princes captiv'd by the handOf that black name, Edward, Black Prince of Wales;

1599, William Shakespeare, The Life of King Henry V‎

He told Peace that he did not believe his statement that he had fired the pistol merely to frighten the constable; had not Robinson guarded his head with his arm he would have been wounded fatally, and Peace condemned to death.

1918, H. B. Irving, A Book of Remarkable Criminals‎

A 22-year-old man has been jailed for life with a minimum term of 25 years for fatally stabbing 22-year-old Tashan Daniel in an unprovoked attack at Hillingdon Underground station on September 24 2019.

2020 September 9, “Network News: Man jailed for Hillingdon murder”, in Rail, page 25

Chelsea will point to that victory margin as confirmation of their superiority - but Spurs will complain their hopes of turning the game around were damaged fatally by Atkinson's decision.

2012 April 15, Phil McNulty, “Tottenham 1-5 Chelsea”, in BBC‎

"They pretend," as I hear, "that the verses of Kabir have four different senses; illusion, spirit, intellect, and the exoteric doctrine of the Vedas;" but in this part of the world it is considered a ground for complaint if a man's writings admit of more than one interpretation. While England endeavors to cure the potato-rot, will not any endeavor to cure the brain-rot, which prevails so much more widely and fatally?

1854, Henry David Thoreau, Walden, or Life in the Woods‎

He was a slender young man in hot black clothes; he wore the unfaçaded collar fatally and unanimously adopted by all adam's-apple men of morals; he was washed, fair, flat-skulled, clean-minded, and industrious; and the only noise of any kind he ever made in the world was on Sunday.

1913, Booth Tarkington, chapter 9, in The Flirt, Garden City, N.Y.: Doubleday, Page & Company, page 138