| register | (noun) a regulator (as a sliding plate) for regulating the flow of air into a furnace or other heating device | - |
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| (noun) an air passage (usually in the floor or a wall of a room) for admitting or excluding heated air from the room | - |
| (noun) a cashbox with an adding machine to register transactions; used in shops to add up the bill | Synonyms: cash register |
| (noun) (computer science) memory device that is the part of computer memory that has a specific address and that is used to hold information of a specific kind | - |
| (noun) (music) the timbre that is characteristic of a certain range and manner of production of the human voice or of different pipe organ stops or of different musical instruments | - |
| (noun) an official written record of names or events or transactions | Synonyms: registry |
| (noun) a book in which names and transactions are listed | - |
| requester | (noun) one praying humbly for something | Synonyms: petitioner, suppliant, supplicant |
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| resister | (noun) someone who systematically obstructs some action that others want to take | Synonyms: obstructer, obstructionist, obstructor, thwarter |
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| (noun) someone who offers opposition | Synonyms: adversary, antagonist, opponent, opposer |
| rester | (noun) a person who rests | - |
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| rhymester | (noun) a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets) | Synonyms: poetiser, poetizer, rhymer, versifier |
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| ringmaster | (noun) the person in charge of performances in a circus ring | - |
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| roadster | (noun) a small lightweight carriage; drawn by a single horse | Synonyms: buggy |
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| (noun) an open automobile having a front seat and a rumble seat | Synonyms: runabout, two-seater |
| roaster | (noun) a special cooking pan for roasting | - |
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| (noun) flesh of a large young chicken over 3 1/2 lb suitable for roasting | - |
| (noun) a cook who roasts food | - |
| (noun) a harsh or humorous critic (sometimes intended as a facetious compliment) | - |
| roisterer | (noun) an especially noisy and unrestrained merrymaker | - |
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| rooster | (noun) adult male chicken | Synonyms: cock |
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| roster | (noun) a list of names | Synonyms: roll |
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| sandblaster | (noun) a tool that throws out a blast of steam laden with sand; used to clean or grind hard surfaces | - |
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| schlockmeister | (noun) (slang) a merchant who deals in shoddy or inferior merchandise | Synonyms: shlockmeister |
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| schoolmaster | (noun) food fish of warm Caribbean and Atlantic waters | Synonyms: Lutjanus apodus |
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| (noun) presiding officer of a school | Synonyms: headmaster, master |
| (noun) any person (or institution) who acts as an educator | - |
| scoutmaster | (noun) the leader of a troop of Scouts | - |
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| seamster | (noun) a person whose occupation is making and altering garments | Synonyms: sartor, tailor |
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| semester | (noun) one of two divisions of an academic year | - |
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| (noun) half a year; a period of 6 months | - |
| shinplaster | (noun) paper money of little value issued on insufficient security | - |
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| shirtwaister | (noun) a blouse with buttons down the front | Synonyms: shirtwaist |
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| shlockmeister | (noun) (slang) a merchant who deals in shoddy or inferior merchandise | Synonyms: schlockmeister |
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| shyster | (noun) a person (especially a lawyer or politician) who uses unscrupulous or unethical methods | Synonyms: pettifogger |
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| sister | (noun) a female person who has the same parents as another person | Synonyms: sis |
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| (noun) a female person who is a fellow member of a sorority or labor union or other group | - |
| sisterhood | (noun) a religious society of women who live together as sisters (especially an order of nuns) | - |
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| (noun) an association or society of women who are linked together by a common religion or trade or interest | Synonyms: sistership |
| (noun) the kinship relation between a female offspring and the siblings | Synonyms: sistership |
| sistership | (noun) an association or society of women who are linked together by a common religion or trade or interest | Synonyms: sisterhood |
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| (noun) the kinship relation between a female offspring and the siblings | Synonyms: sisterhood |
| sodbuster | (noun) a person who operates a farm | Synonyms: farmer, granger, husbandman |
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| solenogaster | (noun) deep-water wormlike mollusks lacking calcareous plates on the body but having fine slimy spicules on the covering mantle | Synonyms: aplacophoran |
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| songster | (noun) any bird having a musical call | Synonyms: songbird |
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| (noun) a person who sings with skill | - |
| (noun) a composer of words or music for popular songs | Synonyms: ballad maker, songwriter |
| southeaster | (noun) a strong wind from the southeast | Synonyms: sou'easter |
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| southwester | (noun) a strong wind from the southwest | Synonyms: sou'wester |
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| spinmeister | (noun) a public relations person who tries to forestall negative publicity by publicizing a favorable interpretation of the words or actions of a company or political party or famous person | Synonyms: spin doctor |
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| spinster | (noun) an elderly unmarried woman | Synonyms: old maid |
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| (noun) someone who spins (who twists fibers into threads) | Synonyms: spinner, thread maker |
| spinsterhood | (noun) the state of being a spinster (usually an elderly unmarried woman) | - |
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| sportscaster | (noun) an announcer who reads sports news or describes sporting events | Synonyms: sports announcer, sports commentator |
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| spymaster | (noun) someone who directs clandestine intelligence activities | - |
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| stationmaster | (noun) the person in charge of a railway station | Synonyms: station agent |
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| stepsister | (noun) a sister who has only one parent in common with you | Synonyms: half-sister, half sister |
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| steradian | (noun) the unit of solid angle adopted under the Systeme International d'Unites | Synonyms: sr |
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| stercobilinogen | (noun) a chromogen formed in the intestine from the breakdown of bilirubin; yields urobilins on oxidation; some is excreted in the feces and some is resorbed and excreted in bile or urine | Synonyms: urobilinogen |
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| stercolith | (noun) a hard mass of fecal matter | Synonyms: coprolith, faecalith, fecalith |
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| sterculia | (noun) any tree of the genus Sterculia | - |
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| stereo | (noun) reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound | Synonyms: stereo system, stereophonic system, stereophony |
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| (noun) two photographs taken from slightly different angles that appear three-dimensional when viewed together | Synonyms: stereoscopic photograph, stereoscopic picture |
| stereochromy | (noun) a process of mural painting in which the pigment is fixed by a series of reactions between the lime, fluosilicic acid, and water glass. | - |
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| stereoisomer | (noun) any of a group of isomers in which atoms are linked in the same order but differ in their spatial arrangement. | - |
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| stereophony | (noun) reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound | Synonyms: stereo, stereo system, stereophonic system |
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| stereophotography | (noun) photography producing images that appear to have depth and solidness and that are created by using a special device (called a stereoscope) to look at two slightly different photographs of something at the same time. | Synonyms: stereo photography, stereoscopic photography |
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| stereoscope | (noun) an optical device for viewing stereoscopic photographs | - |
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| stereoscopy | (noun) three-dimensional vision produced by the fusion of two slightly different views of a scene on each retina | Synonyms: stereoscopic vision |
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| stereotype | (noun) a conventional or formulaic conception or image | - |
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| sterileness | (noun) (of non-living objects) the state of being free of pathogenic organisms | Synonyms: antisepsis, asepsis, sterility |
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| sterilisation | (noun) the act of making an organism barren or infertile (unable to reproduce) | Synonyms: sterilization |
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| (noun) the procedure of making some object free of live bacteria or other microorganisms (usually by heat or chemical means) | Synonyms: sterilization |
| steriliser | (noun) a device for heating substances above their boiling point; used to manufacture chemicals or to sterilize surgical instruments | Synonyms: autoclave, sterilizer |
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| sterility | (noun) the state of being unable to produce offspring; in a woman it is an inability to conceive; in a man it is an inability to impregnate | Synonyms: infertility |
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| (noun) (of non-living objects) the state of being free of pathogenic organisms | Synonyms: antisepsis, asepsis, sterileness |
| sterilization | (noun) the act of making an organism barren or infertile (unable to reproduce) | Synonyms: sterilisation |
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| (noun) the procedure of making some object free of live bacteria or other microorganisms (usually by heat or chemical means) | Synonyms: sterilisation |
| sterilizer | (noun) a device for heating substances above their boiling point; used to manufacture chemicals or to sterilize surgical instruments | Synonyms: autoclave, steriliser |
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| sterling | (noun) British money; especially the pound sterling as the basic monetary unit of the UK | - |
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| stern | (noun) the rear part of a ship | Synonyms: after part, poop, quarter, tail |
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| (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, tail, tail end, tooshie, tush |
| sternness | (noun) uncompromising resolution | Synonyms: strictness |
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| (noun) the quality (as of scenery) being grim and gloomy and forbidding | - |
| sternocleidomastoid | (noun) one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head | Synonyms: musculus sternocleidomastoideus, sternocleido mastoideus, sternocleidomastoid muscle |
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| sternpost | (noun) (nautical) the principal upright timber at the stern of a vessel | - |
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| sternum | (noun) the flat bone that articulates with the clavicles and the first seven pairs of ribs | Synonyms: breastbone |
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| sternutation | (noun) a symptom consisting of the involuntary expulsion of air from the nose | Synonyms: sneeze, sneezing |
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| sternutator | (noun) a chemical substance that causes sneezing and coughing and crying | Synonyms: sternutatory |
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| sternutatory | (noun) a chemical substance that causes sneezing and coughing and crying | Synonyms: sternutator |
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| sternwheeler | (noun) a paddle steamer having the paddle wheel in the stern | - |
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| steroid | (noun) any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects | - |
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| (noun) any hormone affecting the development and growth of sex organs | Synonyms: sex hormone, steroid hormone |
| sterol | (noun) any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances | Synonyms: steroid alcohol |
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| stertor | (noun) the act of snoring or producing a snoring sound | Synonyms: snore, snoring |
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| stilbesterol | (noun) synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy | Synonyms: DES, diethylstilbesterol |
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| subsister | (noun) one who lives through affliction | Synonyms: survivor |
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| suggester | (noun) someone who advances a suggestion or proposal | Synonyms: proposer |
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| supertwister | (noun) the most powerful tornado which can create enormously devastating damage | - |
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| tapster | (noun) a tavern keeper who taps kegs or casks | Synonyms: tapper |
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| taskmaster | (noun) someone who imposes hard or continuous work | - |
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| taster | (noun) someone who samples food or drink for its quality | Synonyms: sampler, taste-tester, taste tester |
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| teamster | (noun) someone who drives a truck as an occupation | Synonyms: truck driver, trucker |
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| (noun) the driver of a team of horses doing hauling | - |
| telecaster | (noun) a television broadcaster | - |
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| tester | (noun) a flat canopy (especially one over a four-poster bed) | - |
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| (noun) someone who administers a test to determine your qualifications | Synonyms: examiner, quizzer |
| testosterone | (noun) a potent androgenic hormone produced chiefly by the testes; responsible for the development of male secondary sex characteristics | - |
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| thirster | (noun) a person with a strong desire for something | Synonyms: longer, yearner |
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| throwster | (noun) a person who twists silk or rayon filaments into a thread or yarn | Synonyms: thrower |
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| thruster | (noun) a small rocket engine that provides the thrust needed to maneuver a spacecraft | - |
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| (noun) one who intrudes or pushes himself forward | Synonyms: pusher |
| tipster | (noun) one who sells advice about gambling or speculation (especially at the racetrack) | Synonyms: tout |
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| toaster | (noun) a kitchen appliance (usually electric) for toasting bread | - |
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| (noun) someone who who drinks to the health of someone or the success of some venture | Synonyms: wassailer |
| toastmaster | (noun) the person who proposes toasts and introduces speakers at a banquet | Synonyms: symposiarch |
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| trainmaster | (noun) a railroad employer who is in charge of a railway yard | Synonyms: train dispatcher, yardmaster |
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| trickster | (noun) someone who plays practical jokes on others | Synonyms: cut-up, hoaxer, practical joker, prankster, tricker |
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| (noun) someone who leads you to believe something that is not true | Synonyms: beguiler, cheat, cheater, deceiver, slicker |
| (noun) a mischievous supernatural being found in the folklore of many primitive people; sometimes distinguished by prodigious biological drives and exaggerated bodily parts | - |
| trimester | (noun) a period of three months; especially one of the three three-month periods into which human pregnancy is divided | - |
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| (noun) one of three divisions of an academic year | - |
| trustbuster | (noun) a federal agent who engages in trust busting | - |
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| truster | (noun) a supporter who accepts something as true | Synonyms: believer |
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| twister | (noun) small friedcake formed into twisted strips and fried; richer than doughnuts | Synonyms: cruller |
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| (noun) a localized and violently destructive windstorm occurring over land characterized by a funnel-shaped cloud extending toward the ground | Synonyms: tornado |
| ulster | (noun) loose long overcoat of heavy fabric; usually belted | - |
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| upholsterer | (noun) a craftsman who upholsters furniture | - |
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| upholstery | (noun) the craft of upholstering | - |
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| (noun) covering (padding and springs and webbing and fabric) on a piece of furniture | - |
| viosterol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, cholecalciferol, D, ergocalciferol, vitamin D |
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| waldmeister | (noun) fragrant dark green leaves used to flavor May wine | Synonyms: sweet woodruff |
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| (noun) Old World fragrant stoloniferous perennial having small white flowers and narrow leaves used as flavoring and in sachets; widely cultivated as a ground cover; in some classifications placed in genus Asperula | Synonyms: Asperula odorata, fragrant bedstraw, Galium odoratum, sweet woodruff, woodruff |
| waster | (noun) someone who dissipates resources self-indulgently | Synonyms: wastrel |
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| (noun) a person who destroys or ruins or lays waste to | Synonyms: destroyer, ruiner, undoer, uprooter |
| webmaster | (noun) a technician who designs or maintains a website | - |
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| wester | (noun) wind that blows from west to east | Synonyms: west wind |
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| westerly | (noun) the winds from the west that occur in the temperate zones of the Earth | Synonyms: prevailing westerly |
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| western | (noun) a sandwich made from a western omelet | Synonyms: western sandwich |
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