| nonabsorptive | (adjective) not capable of absorbing or soaking up (liquids) | Synonyms: nonabsorbent |
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| nonadsorbent | (adjective) lacking a capacity to adsorb or cause to accumulate on a surface | Synonyms: nonadsorptive |
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| nonadsorptive | (adjective) lacking a capacity to adsorb or cause to accumulate on a surface | Synonyms: nonadsorbent |
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| oppressor | (noun) a person of authority who subjects others to undue pressures | - |
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| ostensorium | (noun) (Roman Catholic Church) a vessel (usually of gold or silver) in which the consecrated Host is exposed for adoration | Synonyms: monstrance |
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| percussor | (noun) (medicine) a small hammer with a rubber head used in percussive examinations of the chest and in testing reflexes | Synonyms: plessor, plexor |
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| plessor | (noun) (medicine) a small hammer with a rubber head used in percussive examinations of the chest and in testing reflexes | Synonyms: percussor, plexor |
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| possessor | (noun) a person who owns something | Synonyms: owner |
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| precursor | (noun) something that precedes and indicates the approach of something or someone | Synonyms: forerunner, harbinger, herald, predecessor |
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| (noun) a person who goes before or announces the coming of another | Synonyms: forerunner |
| (noun) a substance from which another substance is formed (especially by a metabolic reaction) | - |
| precursory | (adjective) warning of future misfortune | Synonyms: premonitory |
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| predecessor | (noun) something that precedes and indicates the approach of something or someone | Synonyms: forerunner, harbinger, herald, precursor |
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| (noun) one who precedes you in time (as in holding a position or office) | - |
| prehensor | (noun) the anterior pair of legs of a centipede that are modified to seize prey and inject venom from the toxicognaths | - |
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| pressor | (adjective) increasing (or tending to increase) blood pressure | - |
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| (noun) any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure | Synonyms: vasoconstrictive, vasoconstrictor |
| processor | (noun) (computer science) the part of a computer (a microprocessor chip) that does most of the data processing | Synonyms: C.P.U., central processing unit, central processor, CPU, mainframe |
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| (noun) a business engaged in processing agricultural products and preparing them for market | - |
| (noun) someone who processes things (foods or photographs or applicants etc.) | - |
| professor | (noun) someone who is a member of the faculty at a college or university | Synonyms: prof |
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| professorial | (adjective) relating to or characteristic of professors | - |
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| professorially | (adverb) in a professorial manner | - |
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| professorship | (noun) the position of professor | Synonyms: chair |
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| prolusory | (adjective) of or relating to or having the character of a prolusion | - |
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| promisor | (noun) a person who makes a promise | Synonyms: promiser |
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| promissory | (adjective) relating to or having the character of a promise | - |
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| provisory | (adjective) subject to a proviso | - |
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| psoriasis | (noun) a chronic skin disease characterized by dry red patches covered with scales; occurs especially on the scalp and ears and genitalia and the skin over bony prominences | - |
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| ragsorter | (noun) a worker who sorts rags and old clothing for new uses (as in papermaking) | - |
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| reabsorb | (verb) undergo resorption | Synonyms: resorb |
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| reabsorption | (noun) the organic process in which the substance of some differentiated structure that has been produced by the body undergoes lysis and assimilation | Synonyms: resorption |
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| repressor | (noun) an agent that represses | Synonyms: represser |
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| repulsor | (noun) a fictional anti-gravity device in the Star Wars Universe. | Synonyms: repulsorlift, repulsorlift engine |
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| (noun) A repulsor is either one of two drives located in the gauntlets of Iron Man's armor; they have been referred to as being magnetic, a blast of charged particles, and as a force beam. | - |
| repulsorlift | (noun) a fictional anti-gravity device in the Star Wars Universe. | Synonyms: repulsor, repulsorlift engine |
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| resorb | (verb) undergo resorption | Synonyms: reabsorb |
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| resorcinol | (noun) a crystalline phenol obtained from various resins; used in ointments for acne and in dandruff shampoos | - |
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| resorcinolphthalein | (noun) a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed) | Synonyms: fluorescein, fluoresceine, fluorescent dye |
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| resorption | (noun) the organic process in which the substance of some differentiated structure that has been produced by the body undergoes lysis and assimilation | Synonyms: reabsorption |
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| resort | (noun) act of turning to for assistance | Synonyms: recourse, refuge |
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| (noun) something or someone turned to for assistance or security | Synonyms: recourse, refuge |
| (noun) a hotel located in a resort area | Synonyms: holiday resort, resort hotel |
| (noun) a frequently visited place | Synonyms: hangout, haunt, repair, stamping ground |
| (verb) move, travel, or proceed toward some place | Synonyms: repair |
| (verb) have recourse to | Synonyms: fall back, recur |
| scissor | (verb) cut with or as if with scissors | - |
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| scissors | (noun) a wrestling hold in which you wrap your legs around the opponents body or head and put your feet together and squeeze | Synonyms: scissor grip, scissor hold, scissors grip, scissors hold |
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| (noun) a gymnastic exercise performed on the pommel horse when the gymnast moves his legs as the blades of scissors move | - |
| (noun) an edge tool having two crossed pivoting blades | Synonyms: pair of scissors |
| scissortail | (noun) grey flycatcher of the southwestern United States and Mexico and Central America having a long forked tail and white breast and salmon and scarlet markings | Synonyms: Muscivora-forficata, scissortailed flycatcher |
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| sensor | (noun) any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner | Synonyms: detector, sensing element |
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| sensorial | (adjective) involving or derived from the senses | Synonyms: sensory |
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| sensorimotor | (adjective) of or relating to the sensory and motor coordination of an organism or to the controlling nerves | - |
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| sensorineural | (adjective) of or relating to the neural process of sensation | - |
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| sensorium | (noun) the areas of the brain that process and register incoming sensory information and make possible the conscious awareness of the world | - |
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| sensory | (adjective) involving or derived from the senses | Synonyms: sensorial |
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| (adjective) relating to or concerned in sensation | Synonyms: sensational |
| (adjective) of a nerve fiber or impulse originating outside and passing toward the central nervous system | Synonyms: centripetal, receptive |
| somatosensory | (adjective) of or relating to the somatosenses | - |
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| sorb | (noun) acid gritty-textured fruit | Synonyms: sorb apple |
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| (verb) take up a liquid or a gas either by adsorption or by absorption | Synonyms: take up |
| sorbate | (noun) a material that has been or is capable of being taken up by another substance by either absorption or adsorption | - |
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| sorbed | (adjective) (of a substance) taken into and retained in another substance | Synonyms: occluded |
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| sorbefacient | (adjective) inducing or promoting absorption | Synonyms: absorbefacient |
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| sorbent | (noun) a material that sorbs another substance; i.e. that has the capacity or tendency to take it up by either absorption or adsorption | Synonyms: sorbent material |
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| sorbet | (noun) an ice containing no milk but having a mushy consistency; usually made from fruit juice | Synonyms: water ice |
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| sorcerer | (noun) one who practices magic or sorcery | Synonyms: magician, necromancer, thaumaturge, thaumaturgist, wizard |
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| sorceress | (noun) a woman sorcerer | - |
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| sorcerise | (verb) transform or change by means of sorcery | Synonyms: sorcerize |
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| sorcerize | (verb) transform or change by means of sorcery | Synonyms: sorcerise |
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| sorcerous | (adjective) possessing or using or characteristic of or appropriate to supernatural powers | Synonyms: charming, magic, magical, witching, wizard, wizardly |
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| sorcery | (noun) the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world | Synonyms: black art, black magic, necromancy |
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| sordid | (adjective) meanly avaricious and mercenary | - |
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| (adjective) unethical or dishonest | Synonyms: dirty, shoddy |
| (adjective) foul and run-down and repulsive | Synonyms: flyblown, squalid |
| (adjective) morally degraded | Synonyms: seamy, seedy, sleazy, squalid |
| sordidly | (adverb) in a sordid or squalid way | Synonyms: squalidly |
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| sordidness | (noun) unworthiness by virtue of lacking higher values | Synonyms: baseness, contemptibility, despicability, despicableness |
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| (noun) sordid dirtiness | Synonyms: squalidness, squalor |
| sordino | (noun) a mute for a violin | Synonyms: sourdine |
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| sore | (adjective) roused to anger | Synonyms: huffy, mad |
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| (adjective) hurting | Synonyms: raw, sensitive, tender |
| (adjective) causing misery or pain or distress | Synonyms: afflictive, painful |
| (noun) an open skin infection | - |
| sorehead | (noun) someone who is peevish or disgruntled | - |
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| sorely | (adverb) to a great extent | - |
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| (adverb) in or as if in pain | Synonyms: painfully |
| soreness | (noun) an uncomfortable feeling of mental painfulness or distress | Synonyms: discomfort, irritation |
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| (noun) a pain that is felt (as when the area is touched) | Synonyms: rawness, tenderness |
| sorgho | (noun) any of several sorghums cultivated as a source of syrup | Synonyms: sorgo, sugar sorghum, sweet sorghum |
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| sorghum | (noun) made from juice of sweet sorghum | Synonyms: sorghum molasses |
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| (noun) economically important Old World tropical cereal grass | - |
| sorgo | (noun) any of several sorghums cultivated as a source of syrup | Synonyms: sorgho, sugar sorghum, sweet sorghum |
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| sororal | (adjective) like or characteristic of or befitting a sister | Synonyms: sisterlike, sisterly |
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| sorority | (noun) a social club for female undergraduates | - |
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| sorption | (noun) the process in which one substance takes up or holds another (by either absorption or adsorption) | - |
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| sorrel | (adjective) of a light brownish color | Synonyms: brownish-orange |
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| (noun) a horse of a brownish orange to light brown color | - |
| (noun) large sour-tasting arrowhead-shaped leaves used in salads and sauces | Synonyms: common sorrel |
| (noun) any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine | Synonyms: dock, sour grass |
| (noun) any plant or flower of the genus Oxalis | Synonyms: oxalis, wood sorrel |
| (noun) East Indian sparsely prickly annual herb or perennial subshrub widely cultivated for its fleshy calyxes used in tarts and jelly and for its bast fiber | Synonyms: Hibiscus sabdariffa, Jamaica sorrel, red sorrel, roselle, rozelle |
| sorriness | (noun) worthlessness due to insignificance | Synonyms: paltriness |
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| sorrow | (noun) something that causes great unhappiness | Synonyms: grief |
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| (noun) an emotion of great sadness associated with loss or bereavement | - |
| (noun) sadness associated with some wrong done or some disappointment | Synonyms: regret, rue, ruefulness |
| (noun) the state of being sad | Synonyms: sadness, sorrowfulness |
| (verb) feel grief | Synonyms: grieve |
| sorrower | (noun) a person who is feeling grief (as grieving over someone who has died) | Synonyms: griever, lamenter, mourner |
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| sorrowful | (adjective) experiencing or marked by or expressing sorrow especially that associated with irreparable loss | - |
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| sorrowfully | (adverb) with sadness; in a sorrowful manner | Synonyms: dolefully |
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| (adverb) in a sorrowful manner | - |
| sorrowfulness | (noun) a state of gloomy sorrow | Synonyms: mournfulness, ruthfulness |
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| (noun) the state of being sad | Synonyms: sadness, sorrow |
| sorrowing | (adjective) sorrowful through loss or deprivation | Synonyms: bereaved, bereft, grief-stricken, grieving, mourning |
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| sorry | (adjective) feeling or expressing regret or sorrow or a sense of loss over something done or undone | Synonyms: bad, regretful |
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| (adjective) bad; unfortunate | Synonyms: deplorable, distressing, lamentable, pitiful, sad |
| (adjective) causing dejection | Synonyms: blue, dark, dingy, disconsolate, dismal, drab, drear, dreary, gloomy, grim |
| (adjective) without merit; of little or no value or use | Synonyms: good-for-naught, good-for-nothing, meritless, no-account, no-count, no-good |
| sort | (noun) an approximate definition or example | - |
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| (noun) a category of things distinguished by some common characteristic or quality | Synonyms: form, kind, variety |
| (noun) a person of a particular character or nature | - |
| (noun) an operation that segregates items into groups according to a specified criterion | Synonyms: sorting |
| (verb) arrange or order by classes or categories | Synonyms: assort, class, classify, separate, sort out |
| (verb) examine in order to test suitability | Synonyms: screen, screen out, sieve |
| sorted | (adjective) arranged into groups | Synonyms: grouped |
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| (adjective) arranged according to size | - |
| sorter | (noun) a machine for sorting things (such as punched cards or letters) into classes | - |
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| (noun) a clerk who sorts things (as letters at the post office) | - |
| sortie | (noun) a military action in which besieged troops burst forth from their position | Synonyms: sally |
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| (noun) (military) an operational flight by a single aircraft (as in a military operation) | - |
| sorting | (noun) grouping by class or kind or size | - |
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| (noun) the basic cognitive process of arranging into classes or categories | Synonyms: categorisation, categorization, classification |
| (noun) an operation that segregates items into groups according to a specified criterion | Synonyms: sort |
| sortition | (noun) making a chance decision by using lots (straws or pebbles etc.) that are thrown or drawn | Synonyms: casting lots, drawing lots |
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| sorus | (noun) cluster of sporangia usually on underside of a fern frond | - |
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| (noun) a spore-producing structure in certain lichens and fungi | - |
| sponsor | (noun) someone who supports or champions something | Synonyms: patron, supporter |
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| (noun) an advocate who presents a person (as for an award or a degree or an introduction etc.) | Synonyms: presenter |
| (verb) assume sponsorship of | Synonyms: patronise, patronize |
| (verb) assume responsibility for or leadership of | - |
| (verb) do one's shopping at; do business with; be a customer or client of | Synonyms: buy at, frequent, patronise, patronize, shop, shop at |
| sponsorship | (noun) the act of sponsoring (either officially or financially) | - |
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| stressor | (noun) any agent that causes stress to an organism | - |
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| successor | (noun) a thing or person that immediately replaces something or someone | - |
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| (noun) a person who inherits some title or office | Synonyms: heir |
| (noun) a person who follows next in order | Synonyms: replacement |
| supervisor | (noun) a program that controls the execution of other programs | Synonyms: executive program, supervisory program |
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| (noun) one who supervises or has charge and direction of | - |
| supervisory | (adjective) of or limited to or involving supervision | - |
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| suppressor | (noun) an electrical device for suppressing unwanted currents | Synonyms: suppresser |
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| (noun) a gene that suppresses the phenotypic expression of another gene (especially of a mutant gene) | Synonyms: suppresser, suppresser gene, suppressor gene |
| (noun) someone who suppresses | Synonyms: suppresser |
| suspensor | (noun) a support for the genitals worn by men engaging in strenuous exercise | Synonyms: athletic supporter, jock, jockstrap, supporter |
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| suspensory | (noun) a bandage of elastic fabric applied to uplift a dependant part (as the scrotum or a pendulous breast) | Synonyms: suspensory bandage |
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| tensor | (noun) any of several muscles that cause an attached structure to become tense or firm | - |
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| (noun) a generalization of the concept of a vector | - |
| thermocompressor | (noun) An injector, ejector, steam ejector, steam injector, eductor-jet pump or thermocompressor is a type of pump. | Synonyms: eductor-jet pump, ejector, injector, steam ejector, steam injector |
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| tonsorial | (adjective) of or relating to barbers and barbering | - |
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| tortfeasor | (noun) a party who has committed a tort | Synonyms: tort-feasor |
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| transgressor | (noun) someone who transgresses; someone who violates a law or command | - |
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