The story
- Middle English · inherited fromdethful
- English todaydeathful
First known use, by meaning
- from 13th c. Involving the danger of death; fatal, deadly.
- from 15th c. Resembling or pertaining to death; deathly.
- from 17th c. Subject to death; mortal.
Etymology from Wiktionary, CC BY-SA 4.0.