troubler

noun

troubler

noun

Etymology From trouble + -er.

1

One who, or that which, troubles; a disturber.

They are the troublers, they are the dividers of unity, who neglect and permit not others to unite those dissever'd peeces which are yet wanting to the body of Truth.1644, John Milton, Areopagitica:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.