Words Ending With ATOR

Here's the list of all the 593 Words Ending With ATOR in the English Language.

The list is arranged by the word lengths. Click on the length below to jump to the relevant section of the page.

Common Words (with Definitions and Examples)
administrator
1. someone who administers a business
2. the party appointed by a probate court to distribute the estate of someone who dies without a will or without naming an executor
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operator
1. (mathematics) a symbol or function representing a mathematical operation
2. an agent that operates some apparatus or machine
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calculator
1. an expert at calculation (or at operating calculating machines)
2. a small machine that is used for mathematical calculations; can be mechanical or electronic
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moderator
1. any substance used to slow down neutrons in nuclear reactors
2. in the Presbyterian church, the officer who presides over a synod or general assembly
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coordinator
1. someone whose task is to see that work goes harmoniously
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senator
1. a member of a senate
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generator
1. an apparatus that produces a vapor or gas
2. engine that converts mechanical energy into electrical energy by electromagnetic induction
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creator
1. a person who grows or makes or invents things
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indicator
1. a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time
2. a signal for attracting attention
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locator
1. a person who fixes the boundaries of land claims
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investigator
1. a scientist who devotes himself to doing research
2. someone who investigates
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refrigerator
1. white goods in which food can be stored at low temperatures
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navigator
1. the ship's officer in charge of navigation
2. the member of an aircrew who is responsible for the aircraft's course
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translator
1. a person who translates written messages from one language to another
2. someone who mediates between speakers of different languages
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regulator
1. any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.
2. an official responsible for control and supervision of a particular activity or area of public interest
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simulator
1. a machine that simulates an environment for the purpose of training or research
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elevator
1. lifting device consisting of a platform or cage that is raised and lowered mechanically in a vertical shaft in order to move people from one floor to another in a building
2. the airfoil on the tailplane of an aircraft that makes it ascend or descend
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illustrator
1. an artist who makes illustrations (for books or magazines or advertisements etc.)
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accelerator
1. a pedal that controls the throttle valve
2. a valve that regulates the supply of fuel to the engine
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predator
1. someone who attacks in search of booty
2. any animal that lives by preying on other animals
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educator
1. someone who educates young people
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radiator
1. any object that radiates energy
2. heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings
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emulator
1. someone who copies the words or behavior of another
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spectator
1. a close observer; someone who looks at something (such as an exhibition of some kind)
2. a woman's pump with medium heel; usually in contrasting colors for toe and heel
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facilitator
1. someone who makes progress easier
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aggregator
1. a person who collects things
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communicator
1. a person who communicates with others
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terminator
1. someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects)
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separator
1. an apparatus that uses centrifugal force to separate particles from a suspension
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mediator
1. a negotiator who acts as a link between parties
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narrator
1. someone who tells a story
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originator
1. someone who creates new things
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curator
1. the custodian of a collection (as a museum or library)
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estimator
1. an expert at calculation (or at operating calculating machines)
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gator
1. either of two amphibious reptiles related to crocodiles but with shorter broader snouts
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arbitrator
1. someone chosen to judge and decide a disputed issue
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integrator
1. a measuring instrument for measuring the area of an irregular plane figure
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oscillator
1. generator that produces sonic oscillations or alternating current
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alligator
1. leather made from alligator's hide
2. either of two amphibious reptiles related to crocodiles but with shorter broader snouts
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dictator
1. a speaker who dictates to a secretary or a recording machine
2. a ruler who is unconstrained by law
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gladiator
1. (ancient Rome) a professional combatant or a captive who entertained the public by engaging in mortal combat
2. a professional boxer
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incubator
1. apparatus consisting of a box designed to maintain a constant temperature by the use of a thermostat; used for chicks or premature infants
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denominator
1. the divisor of a fraction
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aviator
1. someone who operates an aircraft
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activator
1. (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription
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commentator
1. an expert who observes and comments on something
2. a writer who reports and analyzes events of the day
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legislator
1. someone who makes or enacts laws
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actuator
1. a mechanism that puts something into automatic action
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equator
1. an imaginary line around the Earth forming the great circle that is equidistant from the north and south poles
2. a circle dividing a sphere or other surface into two usually equal and symmetrical parts
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initiator
1. a person who initiates a course of action
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evaluator
1. an authority who is able to estimate worth or quality
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animator
1. someone who imparts energy and vitality and spirit to other people
2. the technician who produces animated cartoons
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eliminator
1. an agent that eliminates something
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innovator
1. someone who helps to open up a new line of research or technology or art
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decorator
1. a person who specializes in interior decoration
2. someone who decorates
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alternator
1. an old term for an electric generator that produces alternating current (especially in automobiles)
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respirator
1. a breathing device for administering long-term artificial respiration
2. a protective mask with a filter; protects the face and lungs against poisonous gases
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duplicator
1. apparatus that makes copies of typed, written or drawn material
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applicator
1. a device for applying a substance
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negotiator
1. someone who negotiates (confers with others in order to reach a settlement)
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perpetrator
1. someone who perpetrates wrongdoing
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ventilator
1. a device (such as a fan) that introduces fresh air or expels foul air
2. a device that facilitates breathing in cases of respiratory failure
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insulator
1. a material such as glass or porcelain with negligible electrical or thermal conductivity
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numerator
1. the dividend of a fraction
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collaborator
1. someone who assists in a plot
2. someone who collaborates with an enemy occupying force
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resonator
1. a hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves
2. an electrical circuit that combines capacitance and inductance in such a way that a periodic electric oscillation will reach maximum amplitude
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allocator
1. a person with authority to allot or deal out or apportion
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incinerator
1. a furnace for incinerating (especially to dispose of refuse)
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accumulator
1. a person who is employed to collect payments (as for rent or taxes)
2. a voltaic battery that stores electric charge
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excavator
1. a workman who excavates for foundations of buildings or for quarrying
2. a machine for excavating
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defibrillator
1. an electronic device that administers an electric shock of preset voltage to the heart through the chest wall in an attempt to restore the normal rhythm of the heart during ventricular fibrillation
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demonstrator
1. a teacher or teacher's assistant who demonstrates the principles that are being taught
2. someone who demonstrates an article to a prospective buyer
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liquidator
1. a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)
2. (law) a person (usually appointed by a court of law) who liquidates assets or preserves them for the benefit of affected parties
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manipulator
1. an agent that operates some apparatus or machine
2. a person who handles things manually
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agitator
1. one who agitates; a political troublemaker
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conservator
1. the custodian of a collection (as a museum or library)
2. someone appointed by a court to assume responsibility for the interests of a minor or incompetent person
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liberator
1. someone who releases people from captivity or bondage
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escalator
1. a clause in a contract that provides for an increase or a decrease in wages or prices or benefits etc. depending on certain conditions (as a change in the cost of living index)
2. a stairway whose steps move continuously on a circulating belt
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violator
1. someone who violates the law
2. someone who assaults others sexually
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laminator
1. a person who makes laminates (especially plastic laminates)
2. Any of a range of machines used for lamination.
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authenticator
1. one who determines authenticity (as of works of art) or who guarantees validity
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motivator
1. a positive motivational influence
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adjudicator
1. a person who studies and settles conflicts and disputes
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enumerator
1. someone who collects census data by visiting individual homes
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attenuator
1. an electrical device for attenuating the strength of an electrical signal
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orator
1. a person who delivers a speech or oration
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stator
1. mechanical device consisting of the stationary part of a motor or generator in or around which the rotor revolves
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detonator
1. a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive
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fabricator
1. someone who tells lies
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testator
1. a person who makes a will
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propagator
1. someone who propagates plants (as under glass)
2. someone who spreads the news
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impersonator
1. someone who (fraudulently) assumes the appearance of another
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conspirator
1. a member of a conspiracy
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exterminator
1. someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects)
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interrogator
1. a questioner who is excessively harsh
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deflator
1. a statistical factor designed to remove the effect of inflation; inflation adjusted variables are in constant dollars
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collimator
1. a small telescope attached to a large telescope to use in setting the line of the larger one
2. optical device consisting of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam
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aerator
1. an apparatus for exposing something to the air (as sewage)
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migrator
1. traveler who moves from one region or country to another
2. an animal (especially birds and fish) that travels between different habitats at particular times of the year
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vasodilator
1. a drug that causes dilation of blood vessels
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discriminator
1. a person who (or that which) differentiates
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procurator
1. a person authorized to act for another
2. (ancient Rome) someone employed by the Roman Emperor to manage finance and taxes
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cultivator
1. someone concerned with the science or art or business of cultivating the soil
2. a farm implement used to break up the surface of the soil (for aeration and weed control and conservation of moisture)
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instigator
1. someone who deliberately foments trouble
2. a person who initiates a course of action
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speculator
1. someone who makes conjectures without knowing the facts
2. someone who risks losses for the possibility of considerable gains
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infiltrator
1. someone who takes up a position surreptitiously for the purpose of espionage
2. an intruder (as troops) with hostile intent
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procrastinator
1. someone who postpones work (especially out of laziness or habitual carelessness)
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annihilator
1. a total destroyer
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differentiator
1. a person who (or that which) differentiates
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inflator
1. an air pump operated by hand to inflate something (as a tire)
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litigator
1. (law) a party to a lawsuit; someone involved in litigation
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commutator
1. switch for reversing the direction of an electric current
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demodulator
1. rectifier that extracts modulation from a radio carrier wave
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nominator
1. someone who proposes a candidate for appointment or election
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bronchodilator
1. a drug that relaxes and dilates the bronchial passageways and improves the passages of air into the lungs
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syndicator
1. a businessman who forms a syndicate
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5-Letter Words Ending With ATOR

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19-Letter Words Ending With ATOR