spoiler UK /ˈspɔɪ.lə/US /ˈspɔɪ.lɚ/noun 6verb 2forms 3 noun6 •One who corrupts, mars, or renders useless. •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.Good netiquette dictates that one warn of spoilers before discussing them, so that readers who wish to do so may experience the surprises for themselves. •A device to reduce lift and increase drag. •A device to reduce lift and increase downforce. •A competitor, unable to win themselves, who spoils the chances of another’s victory.The optimism at the opening of the talks could not be dampened even by a few spoilers. — 1994 •One who spoils; a plunderer; a pillager; a robber; a despoiler. verb2 •(slang) To tell (a person) details of how a story ends etc.I've been spoilered, so I doubt I'll be able to enjoy the final episode. •(slang) To mark (a document or message) with a spoiler warning, to prevent readers from accidentally learning details they would prefer not to know. formsspoilered · spoilering · spoilers