Crossword clues for upsetter
Wiktionary
upsetter
n. 1 One who upsets (something); a disrupter. 2 A person or device that turns something upside down.
WordNet
upsetter
n. an unexpected winner; someone who defeats the favorite competitor
Usage examples of "upsetter".
He argued as modern men do who think the hero, the upsetter of ordinary calculations, is gone from us.
Holy Father to cover with his mantle the upsetters of order who are cutting at the roots of the Church as well as the State.