Proceeding from, or appointed by, fate or destiny; necessary; inevitable.
- Causing or capable of causing death.
- Causing ruin or destruction; disastrous: "Such doctrines, if true, would be absolutely fatal to my theory” ( Charles Darwin).
- Of decisive importance; fateful: came through at the fatal moment.
- Concerning or determining one's fate: the fatal thread of life.
- Obsolete Having been destined; fated.