Latin · suffix
-or
one who
Words sharing this root
actorA person or entity that takes part in an action.administratorA person authorized to manage an organization, system, or estate.aggressorA person, group, or country that starts an attack or conflict.ancestorAn earlier forebear from whom a later form descends.assessorA person who officially or systematically judges something's value or quality.auditora person who checks accounts, records, or operations for accuracybenefactorA person who gives money or other help to someone or a cause.calculatorA device or program that performs mathematical calculations.cantorA singer who leads music or chanting in religious worship.capacitorAn electrical component that stores charge and energy.collectorA person or device that gathers specified items.communicatorA person or device that conveys messages.compressorA device reducing the volume or range occupied by something.confessorA priest who hears confessions of sin.constructorA maker that creates something from parts.contractorA party bound by an agreement to perform specified work.contributorA person or thing that gives something or helps produce a result.creditorA person or institution to whom money is owed.curatorA person who selects and cares for a collection or its presentation.cursorA marker or control indicating the current position in an interface.depressorSomething that moves or forces another thing downward.detectorA device or person that finds or identifies something.dictatorA ruler or other person who exercises absolute, often oppressive authority.directorA person or device guiding an operation.distributorA person or device directing supplies to their recipients.donorA source that freely supplies something to another.editorA person who prepares material for publication.educatorA person or thing that teaches or provides instruction.equatorAn imaginary line around a planet or sphere halfway between its poles.executorSomeone or something responsible for carrying out instructions.exhibitorA person or organization that displays or presents something to the public.factorAn element that contributes to producing a result.factorAn agent who conducts business on another's behalf.factorA business that buys unpaid invoices at a discount and collects payment.fervorIntense enthusiasm or passionate feeling.fornicatorA person who has sex outside marriage.impostorSomeone who assumes a false identity or falsely claims a role or status.indicatorSomething that reveals a condition through an observable sign.inspectorA person who officially checks that something meets required standards.instructorA person who teaches a subject or skill.interceptorA person or thing that catches or blocks something on its way.interrogatorA person who questions someone closely or formally.inventorA person who creates a new device, process, or idea.locatorA means of establishing where something is.malefactorA person who commits a crime or other wrongdoing.mediatorAn intermediary through which separate parties or factors interact.modulatorA device or substance that controls or adjusts how something operates.motorA machine that converts energy into movement.motorTo move or progress steadily.motorRelating to the control or action of muscles.narratorA person or voice that tells a story or describes events.numeratorThe top number in a fraction.oppressorA person, group, or system that cruelly or unjustly controls others.persecutorSomeone who harasses, oppresses, or punishes others unfairly.preceptorA person who teaches or supervises a learner.precursorSomething that comes before and helps lead to the development of something else.predatorAn animal that captures other animals for food.predictorSomeone or something used to forecast an outcome.professorA college or university teacher, especially one of higher rank.protectorSomeone or something that guards against harm.protractorAn instrument for measuring and drawing angles.receptorA structure that receives and responds to an incoming stimulus.rectorThe head of a church or educational institution.sculptorAn artist who creates three-dimensional works of art.sectorA defined subdivision of a larger area.spectatorA person who watches an event or performance.sponsorA person or organization that provides financial or formal support.stuporA dazed mental state with greatly reduced awareness and responsiveness.successorA person or thing that takes another's place in a role or position.supervisorAn official responsible for overseeing others' work.torporA state of reduced activity, energy, and responsiveness.tractorA powered vehicle designed to pull a load.transgressora person who breaks a law, rule, or moral boundarytranslatorAn agent that converts information between languages.valorGreat courage in the face of danger.valorousShowing great courage in the face of danger.