Definition

Noun: 1. An unexpected winner; someone who defeats the favorite competitor: An "upsetter" is a person, team, or competitor that achieves a surprising victory against an opponent who was widely expected to win.

Usage and Examples

• Noun:
  • The young boxer was the upsetter of the tournament, knocking out the reigning champion.
  • In a major political upsetter, the independent candidate won the senate seat.
  • The underdog team proved to be the upsetter, defeating the number one seed.

Advanced Usage

• "to be/act as an upsetter": To perform the role of causing a surprising defeat.
  • The rookie pitcher acted as the upsetter, shutting out the league's best-hitting team.
• Conceptual Use: The term can be applied metaphorically to any force or entity that unexpectedly overturns an established favorite or frontrunner.
  • The new streaming service was the upsetter in the media market, quickly gaining more subscribers than the industry leader.

Variants and Related Words

• Upset (noun): The event or instance of an unexpected defeat.
  • The game's result was a historic upset.
• Upset (verb): To defeat unexpectedly.
  • They hope to upset the top-ranked team.
• Underdog: A competitor thought to have little chance of winning. (Note: An "underdog" becomes an "upsetter" only if they win.)
• Cinderella (sports): A team or player that achieves unexpected success in a tournament.

Synonyms

• Dark horse: A little-known competitor who unexpectedly wins or succeeds.
• Giant-killer: One who defeats a much more powerful or famous opponent.

Antonyms

• Favorite: The competitor expected to win.
• Front-runner: The contestant leading or expected to lead.

Related Phrases and Idioms

• To pull off an upset: To achieve an unexpected victory.
  • They managed to pull off a stunning upset in the final minutes.
• Upset victory: A win that is surprising and against the odds.
  • The election was decided by an upset victory.

Noun

1. an unexpected winner; someone who defeats the favorite competitor