The story
- Latinspolium
- Latinspoliāre
- Old Frenchespoillier
- Middle Englishspoilen
- Englishspoil
- English todayspoiler
First known use, by meaning
- from 1970s A document, review or comment that discloses the ending or some key surprise or twist in a story, or the internal rules controlling the behaviour of a video game, etc.
Etymology from Wiktionary, CC BY-SA 4.0.