Usage examples for fatal:

• The disease is usually fatal "Ducks and Geese" – Harry M. Lamon Rob R. Slocum

• Petter Nord was the most terrible, the most fatal name in the world. "Invisible Links" – Selma Lagerlof

• I felt the sight of him was fatal "The House by the Church-Yard" – J. Sheridan Le Fanu

• There's nothing so fatal to man or woman as to form low connexions. "The Red Room" – August Strindberg