Spoil"er (?), n. 1. One who spoils; a plunderer; a pillager; a robber; a despoiler.

2. One who corrupts, mars, or renders useless.

Spoil"er (?), n. 1. One who spoils; a plunderer; a pillager; a robber; a despoiler.

2. 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. 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.
       *Wikipedia article on spoilers in media
  
• in aeronautics, a device to reduce lift
       *Wikipedia article on aeronautic spoilers
  
• in automobiles, a device to reduce lift and increase downforce
       *Wikipedia article on automotive spoilers
  
• In politics or gaming: an individual unable to win an election or game for him- or herself, but with the power to determine which player or candidate among two or more others does win.
       *Wikipedia article on the spoiler effect