Thesaurus / upsetter
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLE SENTENCES FROM THE WEB

No doubt she looked upon her with an evil eye, as being the upsetter of all her plans.
He argued as modern men do who think the hero, the upsetter of ordinary calculations, is gone from us.
He had always been an upsetter of conventions, and a law unto himself.
THE DIVINE FIREMAY SINCLAIR

WORDS RELATED TO UPSETTER

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.