| abator | (noun) a person who abates a nuisance | - |
|---|
| abbreviator | (noun) one who shortens or abridges or condenses a written work | Synonyms: abridger |
|---|
| abdicator | (noun) one who formally relinquishes an office or responsibility | - |
|---|
| abductor | (noun) a muscle that draws a body part away from the median line | Synonyms: abductor muscle |
|---|
| (noun) someone who unlawfully seizes and detains a victim (usually for ransom) | Synonyms: kidnaper, kidnapper, snatcher |
| abettor | (noun) one who helps or encourages or incites another | Synonyms: abetter |
|---|
| abnegator | (noun) one who gives up or relinquishes or renounces something | - |
|---|
| abominator | (noun) one who hates or loathes | Synonyms: loather |
|---|
| abrogator | (noun) an authority or official empowered to abolish or annul or repeal | - |
|---|
| abstractor | (noun) one who makes abstracts or summarizes information | Synonyms: abstracter |
|---|
| accelerator | (noun) a valve that regulates the supply of fuel to the engine | Synonyms: throttle, throttle valve |
|---|
| (noun) a scientific instrument that increases the kinetic energy of charged particles | Synonyms: atom smasher, particle accelerator |
| (noun) a pedal that controls the throttle valve | Synonyms: accelerator pedal, gas, gas pedal, gun, throttle |
| (noun) (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected | Synonyms: catalyst |
| accentor | (noun) small sparrow-like songbird of mountainous regions of Eurasia | - |
|---|
| acceptor | (noun) the person (or institution) who accepts a check or draft and becomes responsible for paying the party named in the draft when it matures | - |
|---|
| (noun) (chemistry) in the formation of a coordinate bond it is the compound to which electrons are donated | - |
| accommodator | (noun) someone who performs a service or does a favor | Synonyms: obliger |
|---|
| accumulator | (noun) a voltaic battery that stores electric charge | Synonyms: storage battery |
|---|
| (noun) (computer science) a register that has a built-in adder that adds an input number to the contents of the register | Synonyms: accumulator register |
| (noun) a person who is employed to collect payments (as for rent or taxes) | Synonyms: collector, gatherer |
| activator | (noun) (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 | - |
|---|
| actor | (noun) a theatrical performer | Synonyms: histrion, player, role player, thespian |
|---|
| (noun) a person who acts and gets things done | Synonyms: doer, worker |
| actuator | (noun) a mechanism that puts something into automatic action | - |
|---|
| adaptor | (noun) device that enables something to be used in a way different from that for which it was intended or makes different pieces of apparatus compatible | Synonyms: adapter |
|---|
| adductor | (noun) a muscle that draws a body part toward the median line | Synonyms: adductor muscle |
|---|
| adjudicator | (noun) a person who studies and settles conflicts and disputes | - |
|---|
| adjustor | (noun) one who investigates insurance claims or claims for damages and recommends an effective settlement | Synonyms: adjuster, claim agent, claims adjuster, claims adjustor |
|---|
| administrator | (noun) someone who administers a business | Synonyms: decision maker |
|---|
| (noun) the party appointed by a probate court to distribute the estate of someone who dies without a will or without naming an executor | - |
| (noun) someone who manages a government agency or department | Synonyms: executive |
| adulator | (noun) a person who uses flattery | Synonyms: flatterer |
|---|
| adulterator | (noun) a changer who lessens the purity or effectiveness of a substance | - |
|---|
| (noun) any substance that lessens the purity or effectiveness of a substance | Synonyms: adulterant |
| advisor | (noun) an expert who gives advice | Synonyms: adviser, consultant |
|---|
| advocator | (noun) a person who pleads for a cause or propounds an idea | Synonyms: advocate, exponent, proponent |
|---|
| aerator | (noun) an apparatus for exposing something to the air (as sewage) | - |
|---|
| aerogenerator | (noun) generator that extracts usable energy from winds | Synonyms: wind generator, windmill |
|---|
| agglomerator | (noun) a device that causes material to gather into rounded balls | - |
|---|
| aggravator | (noun) an unpleasant person who is annoying or exasperating | Synonyms: annoyance |
|---|
| aggregator | (noun) a person who collects things | Synonyms: collector |
|---|
| aggressor | (noun) someone who attacks | Synonyms: assailant, assaulter, attacker |
|---|
| (noun) a confident assertive person who acts as instigator | - |
| agitator | (noun) one who agitates; a political troublemaker | Synonyms: fomenter |
|---|
| alienator | (noun) an unpleasant person who causes friendly people to become indifferent or unfriendly or hostile | - |
|---|
| alienor | (noun) someone from whom the title of property is transferred | - |
|---|
| alleviator | (noun) remedy that alleviates pain without curing | Synonyms: alleviant, palliative |
|---|
| (noun) a therapist who makes suffering more endurable | - |
| alligator | (noun) either of two amphibious reptiles related to crocodiles but with shorter broader snouts | Synonyms: gator |
|---|
| (noun) leather made from alligator's hide | - |
| alliterator | (noun) a speaker or writer who makes use of alliteration | - |
|---|
| allocator | (noun) a person with authority to allot or deal out or apportion | Synonyms: distributor |
|---|
| alternator | (noun) an old term for an electric generator that produces alternating current (especially in automobiles) | - |
|---|
| amalgamator | (noun) a businessman who arranges an amalgamation of two or more commercial companies | - |
|---|
| ambassador | (noun) a diplomat of the highest rank; accredited as representative from one country to another | Synonyms: embassador |
|---|
| (noun) an informal representative | - |
| amboceptor | (noun) an immune body formed in the blood during infection or immunization that serves to link the complement to the antigen. | - |
|---|
| amputator | (noun) a surgeon who removes part or all of a limb | - |
|---|
| anaphor | (noun) a word (such as a pronoun) used to avoid repetition; the referent of an anaphor is determined by its antecedent | - |
|---|
| ancestor | (noun) someone from whom you are descended (but usually more remote than a grandparent) | Synonyms: antecedent, ascendant, ascendent, root |
|---|
| anchor | (noun) a mechanical device that prevents a vessel from moving | Synonyms: ground tackle |
|---|
| (noun) a central cohesive source of support and stability | Synonyms: backbone, keystone, linchpin, lynchpin, mainstay |
| (noun) a television reporter who coordinates a broadcast to which several correspondents contribute | Synonyms: anchorman, anchorperson |
| animator | (noun) the technician who produces animated cartoons | - |
|---|
| (noun) someone who imparts energy and vitality and spirit to other people | Synonyms: energiser, energizer, vitaliser, vitalizer |
| annihilator | (noun) a total destroyer | - |
|---|
| annotator | (noun) a commentator who writes notes to a text | - |
|---|
| annunciator | (noun) an indicator that announces which electrical circuit has been active (as on a telephone switchboard) | - |
|---|
| anterior | (noun) a tooth situated at the front of the mouth | Synonyms: front tooth |
|---|
| anticipator | (noun) one who anticipates | Synonyms: anticipant |
|---|
| applicator | (noun) a device for applying a substance | Synonyms: applier |
|---|
| appreciator | (noun) a person who is fully aware of something and understands it | - |
|---|
| appropriator | (noun) someone who takes for his or her own use (especially without permission) | - |
|---|
| arbitrator | (noun) someone chosen to judge and decide a disputed issue | Synonyms: arbiter, umpire |
|---|
| arbor | (noun) a framework that supports climbing plants | Synonyms: arbour, bower, pergola |
|---|
| (noun) any of various rotating shafts that serve as axes for larger rotating parts | Synonyms: mandrel, mandril, spindle |
| (noun) tree (as opposed to shrub) | - |
| ardor | (noun) intense feeling of love | Synonyms: ardour |
|---|
| (noun) a feeling of strong eagerness (usually in favor of a person or cause) | Synonyms: ardour, elan, zeal |
| (noun) feelings of great warmth and intensity | Synonyms: ardour, fervency, fervidness, fervor, fervour, fire |
| armor | (noun) tough more-or-less rigid protective covering of an animal or plant | Synonyms: armour |
|---|
| (noun) protective covering made of metal and used in combat | Synonyms: armour |
| (noun) a military unit consisting of armored fighting vehicles | Synonyms: armour |
| arrogator | (noun) a person who through conceit makes pretentious claims to rights or advantages that he or she is not entitled to or to qualities that he or she does not possess | - |
|---|
| articulator | (noun) a movable speech organ | - |
|---|
| (noun) someone who pronounces words | - |
| asphyxiator | (noun) a manually operated device for extinguishing small fires | Synonyms: extinguisher, fire extinguisher |
|---|
| aspirator | (noun) a pump that draws air or another gas through a liquid | - |
|---|
| assassinator | (noun) a murderer (especially one who kills a prominent political figure) who kills by a surprise attack and often is hired to do the deed | Synonyms: assassin, bravo |
|---|
| assessor | (noun) an official who evaluates property for the purpose of taxing it | Synonyms: tax assessor |
|---|
| asseverator | (noun) someone who claims to speak the truth | Synonyms: affirmer, asserter, avower, declarer |
|---|
| assignor | (noun) (law) the party who makes an assignment | - |
|---|
| assimilator | (noun) someone (especially a child) who learns (as from a teacher) or takes up knowledge or beliefs | Synonyms: learner, scholar, student |
|---|
| astrogator | (noun) the navigator of a spacecraft | - |
|---|
| athanor | (noun) a furnace that feeds itself so as to maintain a uniform temperature; used by alchemists | - |
|---|
| attenuator | (noun) an electrical device for attenuating the strength of an electrical signal | - |
|---|
| attestator | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestant, attestor, witness |
|---|
| attestor | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestant, attestator, witness |
|---|
| attractor | (noun) a characteristic that provides pleasure and attracts | Synonyms: attracter, attraction, attractive feature, magnet |
|---|
| (noun) (physics) a point in the ideal multidimensional phase space that is used to describe a system toward which the system tends to evolve regardless of the starting conditions of the system | Synonyms: attracter |
| (noun) an entertainer who attracts large audiences | Synonyms: attracter, attraction, draw, drawing card |
| auditor | (noun) a qualified accountant who inspects the accounting records and practices of a business or other organization | - |
|---|
| (noun) someone who listens attentively | Synonyms: attender, hearer, listener |
| (noun) a student who attends a course but does not take it for credit | - |
| authenticator | (noun) one who determines authenticity (as of works of art) or who guarantees validity | Synonyms: appraiser |
|---|
| author | (noun) writes (books or stories or articles or the like) professionally (for pay) | Synonyms: writer |
|---|
| (noun) someone who originates or causes or initiates something | Synonyms: generator, source |
| autoinjector | (noun) a hypodermic syringe to use in injecting yourself with a liquid | - |
|---|
| aviator | (noun) someone who operates an aircraft | Synonyms: aeronaut, flier, flyer |
|---|
| bachelor | (noun) a man who has never been married | Synonyms: unmarried man |
|---|
| (noun) a knight of the lowest order; could display only a pennon | Synonyms: bachelor-at-arms, knight bachelor |
| backdoor | (noun) a secret or underhand means of access (to a place or a position) | Synonyms: back door |
|---|
| (noun) an entrance at the rear of a building | Synonyms: back door, back entrance |
| (noun) an undocumented way to get access to a computer system or the data it contains | Synonyms: back door |
| bailor | (noun) the person who delivers personal property (goods or money) in trust to the bailee in a bailment | - |
|---|
| barndoor | (noun) an opaque adjustable flap on a lamp fixture; used in photography to cut off light from particular areas | - |
|---|
| baroreceptor | (noun) a sensory receptor that responds to pressure | - |
|---|
| barrator | (noun) someone guilty of barratry | Synonyms: barrater |
|---|
| behavior | (noun) manner of acting or controlling yourself | Synonyms: behaviour, conduct, doings |
|---|
| (noun) (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation | Synonyms: behaviour |
| (noun) (behavioral attributes) the way a person behaves toward other people | Synonyms: behaviour, conduct, demeanor, demeanour, deportment |
| (noun) the action or reaction of something (as a machine or substance) under specified circumstances | Synonyms: behaviour |
| benefactor | (noun) a person who helps people or institutions (especially with financial help) | Synonyms: helper |
|---|
| bettor | (noun) someone who bets | Synonyms: better, punter, wagerer |
|---|
| blackamoor | (noun) a person with dark skin who comes from Africa (or whose ancestors came from Africa) | Synonyms: Black person |
|---|
| boor | (noun) a crude uncouth ill-bred person lacking culture or refinement | Synonyms: barbarian, churl, Goth, peasant, tike, tyke |
|---|
| bronchodilator | (noun) a drug that relaxes and dilates the bronchial passageways and improves the passages of air into the lungs | - |
|---|
| calculator | (noun) a small machine that is used for mathematical calculations; can be mechanical or electronic | Synonyms: calculating machine |
|---|
| (noun) an expert at calculation (or at operating calculating machines) | Synonyms: computer, estimator, figurer, reckoner |
| calorisator | (noun) an apparatus used in beet-sugar factories to heat the juice in order to aid the diffusion. | Synonyms: calorizator |
|---|
| calorizator | (noun) an apparatus used in beet-sugar factories to heat the juice in order to aid the diffusion. | Synonyms: calorisator |
|---|
| camphor | (noun) a resin obtained from the camphor tree; used in making celluloid and liniment | - |
|---|
| candor | (noun) the quality of being honest and straightforward in attitude and speech | Synonyms: candidness, candour, directness, forthrightness, frankness |
|---|
| (noun) ability to make judgments free from discrimination or dishonesty | Synonyms: candour, fair-mindedness, fairness |
| cantor | (noun) the official of a synagogue who conducts the liturgical part of the service and sings or chants the prayers intended to be performed as solos | Synonyms: hazan |
|---|
| (noun) the musical director of a choir | Synonyms: choirmaster, precentor |
| capacitor | (noun) an electrical device characterized by its capacity to store an electric charge | Synonyms: capacitance, condenser, electrical condenser |
|---|
| captor | (noun) a person who captures and holds people or animals | Synonyms: capturer |
|---|