upsetter
- n an unexpected winner; someone who defeats the favorite competitor
- Shrimpy, the beatific upsetter causes trouble that the straight-man Paul must correct.
- Now Blood-letter Paul Thomas Anderson is the potential upsetter; and Jason Reitman, 30-year-old son of Canadian comedy conglomerator Ivan Reitman, is the scion to watch.
- Samuel Harden Church, 85, president of the philanthropic Carnegie Institute since 1914, upsetter of diplomatic apple carts; in Pittsburgh.