Latin · suffix
-ator
one that performs an action
Words sharing this root
acceleratorSomething that increases the speed of motion or progress.amateurParticipating without professional status.applicatorA tool or device used to put a substance onto a surface.arbitratorA neutral person chosen to settle a dispute.collaboratorSomeone who works with others on a shared undertaking.conservatorA person entrusted to protect or manage something valuable.conspiratorA person secretly involved in an unlawful or harmful plot.controllerA person or device directing how something operates.counselorA person who advises or guides others.cultivatorA person or tool that tends land for growing crops.denominatorThe lower number of a fraction specifying its unit of division.dispenserA person or device supplying something in portions.divinerA person who seeks hidden knowledge or resources through supernatural or intuitive means.elevatorSomething that lifts people, objects, or body parts.exterminatorA person or company that kills pests.gladiatorA fighter who battled people or animals for public entertainment in ancient Rome.innovatorA person who introduces new ideas, methods, or products.interpreterAn agent that converts communicated instructions into an understood form.investigatorA person who examines facts or evidence to discover the truth.liberatorA person or force that frees others from oppression.litigatorA lawyer who handles lawsuits.moderatorA variable that changes the strength or direction of a relationship between other variables.moderatorA substance or device that slows neutrons in a nuclear reactor.moderatorA person who assesses examination work or checks grading consistency.moderatorA person who guides a discussion.navigatorA person or device that determines a route of travel.negotiatorA person who conducts discussions to reach an agreement.perpetratorA person who commits a crime or harmful act.porterA worker who carries luggage or goods.procuratorAn official who manages affairs on behalf of another person or authority.procurerSomeone who obtains or arranges something for another person.recorderA person or device that preserves information as a record.simulatorA person or system that imitates something real.speculatorSomeone who makes risky investments hoping for profit.stimulatorSomeone or something that increases activity, interest, or excitement.tempterA person or force that entices someone toward wrongdoing or indulgence.terminatorSomething that brings about or marks an end.