noninflammatory | (adjective) not inflammatory | - |
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nonmandatory | (adjective) not required by rule or law | Synonyms: nonobligatory |
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nonmigratory | (adjective) used of animals that do not migrate | Synonyms: resident |
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nonobligatory | (adjective) not required by rule or law | Synonyms: nonmandatory |
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nonoscillatory | (adjective) not having periodic vibrations | - |
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nugatory | (adjective) of no real value | - |
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numerator | (noun) the dividend of a fraction | - |
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obligatorily | (adverb) in a manner that cannot be evaded | Synonyms: compulsorily, mandatorily |
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(adverb) in an obligatory manner | - |
obligatory | (adjective) morally or legally constraining or binding | - |
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(adjective) required by obligation or compulsion or convention | - |
obliterator | (noun) an eliminator that does away with all traces | - |
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observatory | (noun) a building designed and equipped to observe astronomical phenomena | - |
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(noun) a structure commanding a wide view of its surroundings | Synonyms: lookout, lookout station, observation tower |
obturator | (noun) a prosthesis used to close an opening (as to close an opening of the hard palate in cases of cleft palate) | - |
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operator | (noun) an agent that operates some apparatus or machine | Synonyms: manipulator |
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(noun) someone who owns or operates a business | - |
(noun) a shrewd or unscrupulous person who knows how to circumvent difficulties | Synonyms: hustler, wheeler dealer |
(noun) a speculator who trades aggressively on stock or commodity markets | - |
(noun) (mathematics) a symbol or function representing a mathematical operation | - |
orator | (noun) a person who delivers a speech or oration | Synonyms: public speaker, rhetorician, speechifier, speechmaker |
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oratorical | (adjective) characteristic of an orator or oratory | - |
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oratorio | (noun) a musical composition for voices and orchestra based on a religious text | Synonyms: cantata |
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oratory | (noun) addressing an audience formally (usually a long and rhetorical address and often pompous) | - |
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orchestrator | (noun) an arranger who writes for orchestras | - |
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originator | (noun) someone who creates new things | Synonyms: conceiver, mastermind |
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oscillator | (noun) generator that produces sonic oscillations or alternating current | - |
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oscillatory | (adjective) having periodic vibrations | Synonyms: oscillating |
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osculator | (noun) someone who kisses | Synonyms: kisser |
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palpatory | (adjective) relating to or involving palpation | - |
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participatory | (adjective) affording the opportunity for individual participation | - |
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peculator | (noun) someone who violates a trust by taking (money) for his own use | Synonyms: defalcator, embezzler |
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penetrator | (noun) an intruder who passes into or through (often by overcoming resistance) | - |
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perambulator | (noun) a small vehicle with four wheels in which a baby or child is pushed around | Synonyms: baby buggy, baby carriage, carriage, go-cart, pram, pushchair, pusher, stroller |
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percolator | (noun) a coffeepot in which boiling water ascends through a central tube and filters back down through a basket of ground coffee beans | - |
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perpetrator | (noun) someone who perpetrates wrongdoing | Synonyms: culprit |
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photocoagulator | (noun) surgical instrument containing a laser for use in photocoagulation | - |
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piscatorial | (adjective) relating to or characteristic of the activity of fishing | Synonyms: piscatory |
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piscatory | (adjective) relating to or characteristic of the activity of fishing | Synonyms: piscatorial |
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placatory | (adjective) intended to pacify by acceding to demands or granting concessions | Synonyms: appeasing, placating, placative |
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pollinator | (noun) an insect that carries pollen from one flower to another | - |
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postulator | (noun) someone who assumes or takes something for granted as the basis of an argument | - |
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(noun) (Roman Catholic Church) someone who proposes or pleads for a candidate for beatification or canonization | - |
precatory | (adjective) expressing entreaty or supplication | Synonyms: precative |
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precipitator | (noun) removes dust particles from gases by electrostatic precipitation | Synonyms: Cottrell precipitator, electrostatic precipitator |
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predator | (noun) any animal that lives by preying on other animals | Synonyms: predatory animal |
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(noun) someone who attacks in search of booty | Synonyms: marauder, piranha, vulture |
predatory | (adjective) living by or given to victimizing others for personal gain | Synonyms: predaceous, predacious |
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(adjective) living by preying on other animals especially by catching living prey | Synonyms: rapacious, raptorial, ravening, vulturine, vulturous |
(adjective) characterized by plundering or pillaging or marauding | Synonyms: marauding, raiding |
predicator | (noun) an expression that predicates | - |
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prefatorial | (adjective) serving as an introduction or preface | Synonyms: introductory, prefatory |
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prefatory | (adjective) serving as an introduction or preface | Synonyms: introductory, prefatorial |
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preparatory | (adjective) preceding and preparing for something | Synonyms: preparative, propaedeutic |
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prestidigitator | (noun) someone who performs magic tricks to amuse an audience | Synonyms: conjurer, conjuror, illusionist, magician |
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prevaricator | (noun) a person who has lied or who lies repeatedly | Synonyms: liar |
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probatory | (adjective) tending to prove a particular proposition or to persuade you of the truth of an allegation | Synonyms: probative |
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procrastinator | (noun) someone who postpones work (especially out of laziness or habitual carelessness) | Synonyms: cunctator, postponer |
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procurator | (noun) (ancient Rome) someone employed by the Roman Emperor to manage finance and taxes | - |
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(noun) a person authorized to act for another | Synonyms: placeholder, proxy |
profanatory | (adjective) profaning or tending to desecrate | - |
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prognosticator | (noun) someone who makes predictions of the future (usually on the basis of special knowledge) | Synonyms: forecaster, predictor, soothsayer |
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proinflammatory | (adjective) tending to cause inflammation | Synonyms: pro-inflammatory |
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promulgator | (noun) (law) one who promulgates laws (announces a law as a way of putting it into execution) | - |
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pronator | (noun) a muscle that produces or assists in pronation | - |
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propagator | (noun) someone who spreads the news | Synonyms: disseminator |
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(noun) someone who propagates plants (as under glass) | - |
propitiatory | (adjective) having power to atone for or offered by way of expiation or propitiation | Synonyms: expiative, expiatory |
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(adjective) intended to reconcile or appease | Synonyms: propitiative |
purgatorial | (adjective) of or resembling purgatory | - |
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(adjective) serving to purge or rid of sin | Synonyms: purging, purifying |
purgatory | (noun) (theology) in Roman Catholic theology the place where those who have died in a state of grace undergo limited torment to expiate their sins | - |
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(noun) a temporary condition of torment or suffering | - |
purificator | (noun) a white linen cloth which is used to wipe the chalice after each communicant partakes. | Synonyms: emunctorium, purificatorium |
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purificatorium | (noun) a white linen cloth which is used to wipe the chalice after each communicant partakes. | Synonyms: emunctorium, purificator |
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radiator | (noun) a mechanism consisting of a metal honeycomb through which hot fluids circulate; heat is transferred from the fluid through the honeycomb to the airstream that is created either by the motion of the vehicle or by a fan | - |
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(noun) heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings | - |
(noun) any object that radiates energy | - |
ratiocinator | (noun) someone who reasons logically | Synonyms: reasoner |
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reciprocatory | (adjective) moving alternately backward and forward | Synonyms: reciprocative |
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(adjective) given or done or owed to each other | Synonyms: reciprocative |
recriminatory | (adjective) countering one charge with another | Synonyms: recriminative |
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reformatory | (adjective) tending to reform | Synonyms: reformative |
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(noun) correctional institution for the detention and discipline and training of young or first offenders | Synonyms: reform school, training school |
refrigerator | (noun) white goods in which food can be stored at low temperatures | Synonyms: icebox |
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regulator | (noun) any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc. | - |
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(noun) a control that maintains a steady speed in a machine (as by controlling the supply of fuel) | Synonyms: governor |
(noun) an official responsible for control and supervision of a particular activity or area of public interest | - |
regulatory | (adjective) restricting according to rules or principles | Synonyms: regulative |
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remunerator | (noun) a person who pays money for something | Synonyms: payer |
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renovator | (noun) a skilled worker who is employed to restore or refinish buildings or antique furniture | Synonyms: preserver, refinisher, restorer |
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resonator | (noun) any system that resonates | - |
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(noun) an electrical circuit that combines capacitance and inductance in such a way that a periodic electric oscillation will reach maximum amplitude | Synonyms: resonant circuit |
(noun) a hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves | Synonyms: cavity resonator, resonating chamber |
respirator | (noun) a breathing device for administering long-term artificial respiration | Synonyms: inhalator |
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(noun) a protective mask with a filter; protects the face and lungs against poisonous gases | Synonyms: gas helmet, gasmask |
respiratory | (adjective) pertaining to respiration | - |
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resuscitator | (noun) a breathing apparatus used for resuscitation by forcing oxygen into the lungs of a person who has undergone asphyxia or arrest of respiration | - |
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retaliator | (noun) someone who takes vengeance | Synonyms: avenger |
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retaliatory | (adjective) of or relating to or having the nature of retribution | Synonyms: retaliative, retributive, retributory, vindicatory |
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revelatory | (adjective) prophetic of devastation or ultimate doom | Synonyms: apocalyptic, apocalyptical |
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(adjective) (usually followed by `of') pointing out or revealing clearly | Synonyms: indicative, indicatory, significative, suggestive |
rotatory | (adjective) of or relating to or characteristic or causing an axial or orbital turn | Synonyms: revolutionary |
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ruminator | (noun) a reflective thinker characterized by quiet contemplation | Synonyms: muller, muser, ponderer |
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salutatorian | (noun) a graduating student with the second highest academic rank; may deliver the opening address at graduation exercises | Synonyms: salutatory speaker |
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salutatory | (noun) an opening or welcoming statement (especially one delivered at graduation exercises) | Synonyms: salutatory address, salutatory oration |
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sanatorium | (noun) a hospital for recuperation or for the treatment of chronic diseases | Synonyms: sanatarium, sanitarium |
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(noun) pejorative terms for an insane asylum | Synonyms: Bedlam, booby hatch, crazy house, cuckoo's nest, funny farm, funny house, loony bin, madhouse, nut house, nuthouse, snake pit |
satori | (noun) (Zen Buddhism) a state of sudden spiritual enlightenment | - |
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segregator | (noun) someone who believes the racial groups should be kept apart | Synonyms: segregationist |
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selenator | (noun) A fan of Selena Gomez | - |
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senator | (noun) a member of a senate | - |
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senatorial | (adjective) of or relating to senators | - |
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senatorship | (noun) the office of senator | - |
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separator | (noun) an apparatus that uses centrifugal force to separate particles from a suspension | Synonyms: centrifuge, extractor |
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sequenator | (noun) (chemistry) an apparatus that can determine the sequence of monomers in a polymer | Synonyms: sequencer |
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signatory | (noun) someone who signs and is bound by a document | Synonyms: signer |
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simulator | (noun) a machine that simulates an environment for the purpose of training or research | - |
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spectator | (noun) a woman's pump with medium heel; usually in contrasting colors for toe and heel | Synonyms: spectator pump |
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(noun) a close observer; someone who looks at something (such as an exhibition of some kind) | Synonyms: looker, viewer, watcher, witness |
speculator | (noun) someone who risks losses for the possibility of considerable gains | Synonyms: plunger |
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(noun) someone who makes conjectures without knowing the facts | - |
stator | (noun) mechanical device consisting of the stationary part of a motor or generator in or around which the rotor revolves | Synonyms: stator coil |
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steatorrhea | (noun) the presence of greater than normal amounts of fat in the feces which are frothy and foul smelling and floating; a symptom of disorders of fat metabolism and malabsorption syndrome | - |
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sternutator | (noun) a chemical substance that causes sneezing and coughing and crying | Synonyms: sternutatory |
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sternutatory | (adjective) tending to cause sneezing | - |
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(adjective) causing sneezing | Synonyms: sternutative |
(noun) a chemical substance that causes sneezing and coughing and crying | Synonyms: sternutator |
stipulatory | (adjective) constituted or contracted by stipulation or agreement | Synonyms: agreed upon |
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subjugator | (noun) a conqueror who defeats and enslaves | - |
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sudatorium | (noun) a bathhouse for hot air baths or steam baths | Synonyms: sudatory |
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