| accelerando | (noun) a gradually increasing tempo of music | - |
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| acceleration | (noun) the act of accelerating; increasing the speed | Synonyms: quickening, speedup |
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| (noun) an increase in rate of change | - |
| (noun) (physics) a rate of increase of velocity | - |
| accelerator | (noun) a valve that regulates the supply of fuel to the engine | Synonyms: throttle, throttle valve |
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| (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 |
| accelerometer | (noun) an instrument for measuring the acceleration of aircraft or rockets | - |
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| celeriac | (noun) thickened edible aromatic root of a variety of celery plant | Synonyms: celery root |
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| (noun) grown for its thickened edible aromatic root | Synonyms: Apium graveolens rapaceum, celery root, knob celery, root celery, turnip-rooted celery |
| celerity | (noun) a rate that is rapid | Synonyms: quickness, rapidity, rapidness, speediness |
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| celery | (noun) stalks eaten raw or cooked or used as seasoning | - |
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| (noun) widely cultivated herb with aromatic leaf stalks that are eaten raw or cooked | Synonyms: Apium graveolens dulce, cultivated celery |
| chiseler | (noun) a person who swindles you by means of deception or fraud | Synonyms: chiseller, defrauder, gouger, grifter, scammer, swindler |
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| deceleration | (noun) the act of decelerating; decreasing the speed | - |
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| (noun) a decrease in rate of change | Synonyms: retardation, slowing |
| (noun) (physics) a rate of decrease in velocity | - |
| dueler | (noun) a person who fights duels | Synonyms: duelist, dueller, duellist |
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| feeler | (noun) one of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste | Synonyms: antenna |
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| (noun) slender tactile process on the jaws of a fish | Synonyms: barbel |
| (noun) sensitivity similar to that of a receptor organ | Synonyms: antenna |
| (noun) a tentative suggestion designed to elicit the reactions of others | Synonyms: advance, approach, overture |
| freewheeler | (noun) someone acting freely or even irresponsibly | Synonyms: free agent, free spirit |
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| gospeler | (noun) a preacher of the Christian gospel | Synonyms: evangelist, gospeller, revivalist |
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| groveler | (noun) someone who humbles himself as a sign of respect; who behaves as if he had no self-respect | Synonyms: apple polisher, bootlicker, fawner, groveller, truckler |
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| jeweler | (noun) someone in the business of selling jewelry | Synonyms: jeweller |
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| (noun) someone who makes jewelry | Synonyms: jeweller, jewelry maker |
| kneeler | (noun) a board (sometimes cushioned) for someone to kneel on | - |
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| (noun) a person in a kneeling position | - |
| leveler | (noun) a radical who advocates the abolition of social distinctions | Synonyms: leveller |
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| libeler | (noun) one who attacks the reputation of another by slander or libel | Synonyms: backbiter, defamer, maligner, slanderer, traducer, vilifier |
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| modeler | (noun) a person who creates models | Synonyms: modeller |
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| peeler | (noun) a device for peeling vegetables or fruits | - |
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| (noun) a performer who provides erotic entertainment by undressing to music | Synonyms: ecdysiast, exotic dancer, stripper, striptease, striptease artist, stripteaser |
| (noun) a worker who peels the skins from fruits and vegetables | - |
| proaccelerin | (noun) a coagulation factor | Synonyms: accelerator factor, factor V, prothrombin accelerator |
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| quarreler | (noun) a disputant who quarrels | Synonyms: quarreller |
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| reeler | (noun) a dancer of reels | - |
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| (noun) someone who walks unsteadily as if about to fall | Synonyms: staggerer, totterer |
| reveler | (noun) a celebrant who shares in a noisy party | Synonyms: merrymaker, reveller |
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| shoveler | (noun) freshwater duck of the Northern Hemisphere having a broad flat bill | Synonyms: Anas clypeata, broadbill, shoveller |
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| (noun) a worker who shovels | Synonyms: shoveller |
| sniveler | (noun) a person who breathes audibly through a congested nose | Synonyms: sniffler |
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| sternwheeler | (noun) a paddle steamer having the paddle wheel in the stern | - |
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| telerobotics | (noun) the area of robotics that is concerned with the control of robots from a distance | - |
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| traveler | (noun) a person who changes location | Synonyms: traveller |
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| unraveler | (noun) a person who removes tangles; someone who takes something out of a tangled state | Synonyms: disentangler, unraveller |
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| wheeler | (noun) a draft horse harnessed behind others and nearest the wheels of a vehicle | Synonyms: wheel horse |
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| (noun) someone who makes and repairs wooden wheels | Synonyms: wheelwright |
| (noun) a person who rides a bicycle | Synonyms: bicycler, bicyclist, biker, cyclist |
| (noun) the man at the outermost end of the rank in wheeling | - |