To mark (a document or message) with a spoiler warning, to prevent readers from accidentally learning details they would prefer not to know.
To tell (a person) details of how a story ends etc.
An individual (or organisation etc.), unable to win themselves, who spoils the chances of another's victory.
One who spoils; a plunderer; a pillager; a robber; a despoiler.
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.
A device to reduce lift and increase downforce.
A device to reduce lift and increase drag.
One who corrupts, mars, or renders useless.