n.1.One who, or that which, disquiets, or makes uneasy; a disturber.
References in periodicals archive ?
He was a disrupter of norms, a bender of rules, a disquieter of calm.
American indie favourite Todd Solondz, the man behind the brilliant but discomforting Happiness, returns with another disquieter about a 13-year-old girl who yearns to get pregnant after a botched abortion leaves her sterile.