noun
- An unexpected winner; someone who defeats the favorite competitor. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). upsetter. Retrieved September 20, 2026, from http://smartdefine.org/upsetter/definitions/1232705 |
| Chicago | WordNet. 2010. "upsetter" http://smartdefine.org/upsetter/definitions/1232705 (accessed September 20, 2026). |
| Harvard | WordNet 2010, upsetter, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/upsetter/definitions/1232705>. |
| MLA | WordNet. "upsetter" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/upsetter/definitions/1232705> |