| abstain | (verb) choose not to consume | Synonyms: desist, refrain |
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| (verb) refrain from voting | - |
| abstainer | (noun) a person who refrains from drinking intoxicating beverages | Synonyms: abstinent, nondrinker |
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| (noun) someone who practices self denial as a spiritual discipline | Synonyms: ascetic |
| adjustable | (adjective) capable of being changed so as to match or fit | - |
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| (adjective) capable of being regulated | - |
| afforestation | (noun) the conversion of bare or cultivated land into forest (originally for the purpose of hunting) | - |
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| anastalsis | (noun) muscular action of the alimentary tract in a direction opposite to peristalsis | - |
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| antiestablishmentarianism | (noun) the doctrine of opposition to the social and political establishment | Synonyms: antiestablishmentism |
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| antiestablishmentism | (noun) the doctrine of opposition to the social and political establishment | Synonyms: antiestablishmentarianism |
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| antihistamine | (noun) a medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site | - |
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| apostasy | (noun) the act of abandoning a party for cause | Synonyms: tergiversation |
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| (noun) the state of having rejected your religious beliefs for your political party or a cause (often in favor of opposing beliefs or causes) | Synonyms: defection, renunciation |
| apostate | (adjective) not faithful to religion or party or cause | - |
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| (noun) a disloyal person who betrays or deserts his cause or religion or political party or friend etc. | Synonyms: deserter, ratter, recreant, renegade, turncoat |
| apostatise | (verb) abandon one's beliefs or allegiances | Synonyms: apostatize, tergiversate |
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| apostatize | (verb) abandon one's beliefs or allegiances | Synonyms: apostatise, tergiversate |
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| arista | (noun) bristlelike process near the tip of the antenna of certain flies | - |
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| assistance | (noun) the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose | Synonyms: aid, assist, help |
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| (noun) a person or thing that is a resource that helps make something easier or possible to do | Synonyms: aid, help |
| (noun) gift of money or other material help to support a person or cause | Synonyms: aid, economic aid, economic assistance, financial aid, financial assistance |
| assistant | (adjective) of or relating to a person who is subordinate to another | Synonyms: adjunct |
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| (noun) a person who contributes to the fulfillment of a need or furtherance of an effort or purpose | Synonyms: help, helper, supporter |
| astasia | (noun) inability to stand due to muscular incoordination | - |
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| astatic | (adjective) not static or stable | - |
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| astatine | (noun) a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium | Synonyms: At, atomic number 85 |
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| atorvastatin | (noun) an oral drug (trade name Lipitor) that is effective in lowering triglycerides; potent in reducing LDL cholesterol because higher doses can be given | Synonyms: Lipitor |
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| attestant | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestator, attestor, witness |
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| (noun) someone who affirms or vouches for the correctness or truth or genuineness of something | Synonyms: attester |
| attestation | (noun) the action of bearing witness | - |
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| (noun) the evidence by which something is attested | - |
| attestator | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestant, attestor, witness |
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| backstage | (adjective) concealed from public view or attention | Synonyms: offstage |
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| (noun) a stage area out of sight of the audience | Synonyms: offstage, wing |
| (adverb) in or to a backstage area of a theater | - |
| (adverb) out of view of the public; behind the scenes | - |
| backstair | (adjective) secret and sly or sordid | Synonyms: backstairs, furtive |
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| backstairs | (adjective) secret and sly or sordid | Synonyms: backstair, furtive |
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| (noun) a second staircase at the rear of a building | - |
| backstay | (noun) a stay that supports the back of something | - |
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| bacteriostasis | (noun) inhibition of the growth of bacteria | - |
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| bacteriostat | (noun) a chemical or biological material that inhibits bacterial growth | - |
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| bacteriostatic | (adjective) of or relating to or causing bacteriostasis | - |
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| ballista | (noun) ancient missile weapon that throws bolts or stones | Synonyms: bolt thrower |
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| bandstand | (noun) a platform where a (brass) band can play in the open air | Synonyms: outdoor stage, stand |
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| bastard | (adjective) fraudulent; having a misleading appearance | Synonyms: bogus, fake, phoney, phony |
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| (noun) derogatory term for a variation that is not genuine; something irregular or inferior or of dubious origin | Synonyms: mongrel |
| (noun) insulting terms of address for people who are stupid or irritating or ridiculous | Synonyms: asshole, cocksucker, dickhead, mother fucker, motherfucker, prick, shit, SOB, son of a bitch, whoreson |
| (noun) the illegitimate offspring of unmarried parents | Synonyms: by-blow, illegitimate, illegitimate child, love child, whoreson |
| bastardisation | (noun) an act that debases or corrupts | Synonyms: bastardization |
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| bastardise | (verb) declare a child to be illegitimate | Synonyms: bastardize |
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| (verb) change something so that its value declines; for example, art forms | Synonyms: bastardize |
| bastardised | (adjective) deriving from more than one source or style | Synonyms: bastardized |
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| bastardization | (noun) an act that debases or corrupts | Synonyms: bastardisation |
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| (noun) declaring or rendering bastard | - |
| bastardize | (verb) declare a child to be illegitimate | Synonyms: bastardise |
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| (verb) change something so that its value declines; for example, art forms | Synonyms: bastardise |
| bastardized | (adjective) deriving from more than one source or style | Synonyms: bastardised |
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| bastardly | (adjective) of no value or worth | Synonyms: mean |
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| (adjective) born out of wedlock | Synonyms: misbegot, misbegotten, spurious |
| bastardy | (noun) the status of being born to parents who were not married | Synonyms: bar sinister, illegitimacy |
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| beanstalk | (noun) stem of a bean plant | - |
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| biostatistics | (noun) a branch of biology that studies biological phenomena and observations by means of statistical analysis | Synonyms: biometrics, biometry |
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| bloodstain | (noun) a discoloration caused by blood | - |
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| bloodstained | (adjective) covered with blood | Synonyms: gory |
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| bookstall | (noun) a shop where books are sold | Synonyms: bookshop, bookstore |
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| borstal | (noun) formerly a British reform school for youths considered too young to send to prison | - |
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| bustard | (noun) large heavy-bodied chiefly terrestrial game bird capable of powerful swift flight; classified with wading birds but frequents grassy steppes | - |
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| bystander | (noun) a nonparticipant spectator | - |
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| cabstand | (noun) a place where taxis park while awaiting customers | Synonyms: taxi rank, taxistand |
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| canasta | (noun) a form of rummy using two decks of cards and four jokers; jokers and deuces are wild; the object is to form groups of the same rank | Synonyms: basket rummy, meld |
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| capstan | (noun) a windlass rotated in a horizontal plane around a vertical axis; used on ships for weighing anchor or raising heavy sails | - |
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| castanets | (noun) (used in the plural) a percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance | Synonyms: bones, clappers, finger cymbals |
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| castaway | (noun) a shipwrecked person | Synonyms: shipwreck survivor |
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| (noun) a person who is rejected (from society or home) | Synonyms: Ishmael, outcast, pariah |
| celesta | (noun) a musical instrument consisting of graduated steel plates that are struck by hammers activated by a keyboard | - |
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| cerivastatin | (noun) an oral drug (trade name Baycol) to reduce blood cholesterol levels | Synonyms: Baycol |
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| chimneystack | (noun) the part of the chimney that is above the roof; usually has several flues | - |
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| cholestasis | (noun) a condition in which little or no bile is secreted or the flow of bile into the digestive tract is obstructed | Synonyms: acholia |
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| circumstance | (noun) information that should be kept in mind when making a decision | Synonyms: condition, consideration |
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| (noun) formal ceremony about important occasions | - |
| (noun) a condition that accompanies or influences some event or activity | - |
| (noun) the set of facts or circumstances that surround a situation or event | Synonyms: context, setting |
| circumstances | (noun) a person's financial situation (good or bad) | - |
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| (noun) your overall circumstances or condition in life (including everything that happens to you) | Synonyms: destiny, fate, fortune, lot, luck, portion |
| circumstantial | (adjective) fully detailed and specific about particulars | - |
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| circumstantially | (adverb) insofar as the circumstances are concerned | - |
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| (adverb) without advance planning | Synonyms: accidentally, by chance, unexpectedly |
| (adverb) in minute detail | Synonyms: minutely |
| (adverb) according to circumstances | - |
| circumstantiate | (verb) give circumstantial evidence for | - |
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| coastal | (adjective) located on or near or bordering on a coast | - |
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| (adjective) of or relating to a coast | - |
| (adjective) along or following a coast | Synonyms: coastwise |
| coelostat | (noun) optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror | - |
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| conquistador | (noun) an adventurer (especially one who led the Spanish conquest of Mexico and Peru in the 16th century) | - |
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| constable | (noun) a lawman with less authority and jurisdiction than a sheriff | - |
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| (noun) a police officer of the lowest rank | Synonyms: police constable |
| constabulary | (noun) the force of policemen and officers | Synonyms: law, police, police force |
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| constancy | (noun) the quality of being enduring and free from change or variation | Synonyms: stability |
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| (noun) faithfulness and dependability in personal attachments (especially sexual fidelity) | - |
| (noun) (psychology) the tendency for perceived objects to give rise to very similar perceptual experiences in spite of wide variations in the conditions of observation | Synonyms: perceptual constancy |
| constant | (adjective) steadfast in purpose or devotion or affection | - |
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| (adjective) uninterrupted in time and indefinitely long continuing | Synonyms: ceaseless, incessant, never-ending, perpetual, unceasing, unremitting |
| (adjective) unvarying in nature | Synonyms: changeless, invariant, unvarying |
| (noun) a quantity that does not vary | Synonyms: constant quantity, invariable |
| (noun) a number representing a quantity assumed to have a fixed value in a specified mathematical context | - |
| constantan | (noun) an alloy of copper and nickel with high electrical resistance and a low temperature coefficient; used as resistance wire | Synonyms: Eureka |
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| constantly | (adverb) invariably | Synonyms: always, forever, incessantly, perpetually |
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| (adverb) without variation or change, in every case | Synonyms: always, invariably |
| constatation | (noun) an assumption that is basic to an argument | Synonyms: basic assumption, self-evident truth |
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| consubstantial | (adjective) regarded as the same in substance or essence (as of the three persons of the Trinity) | - |
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| consubstantiate | (verb) become united in substance | - |
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| (verb) unite in one common substance | - |
| consubstantiation | (noun) the doctrine of the High Anglican Church that after the consecration of the Eucharist the substance of the body and blood of Christ coexists with the substance of the consecrated bread and wine | - |
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| contestable | (adjective) capable of being contested | - |
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| contestant | (noun) a person who participates in competitions | - |
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| (noun) a person who dissents from some established policy | Synonyms: dissenter, dissident, objector, protester |
| contestation | (noun) a contentious speech act; a dispute where there is strong disagreement | Synonyms: arguing, argument, contention, controversy, disceptation, disputation, tilt |
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| cornstalk | (noun) the stalk of a corn plant | Synonyms: corn stalk |
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| cornstarch | (noun) starch prepared from the grains of corn; used in cooking as a thickener | Synonyms: cornflour |
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| costa | (noun) any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates) | Synonyms: rib |
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| (noun) a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing) | - |
| costal | (adjective) of or relating to or near a rib | - |
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| costalgia | (noun) pain in the chest caused by inflammation of the muscles between the ribs | Synonyms: pleuralgia, pleurodynia |
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| costate | (adjective) having ribs | - |
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| (adjective) (of the surface) having a rough, riblike texture | Synonyms: ribbed |
| counterstain | (noun) a stain of contrasting color that is used when the principal stain does not show the structure clearly | - |
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| cristal | (noun) street names for methylenedioxymethamphetamine | Synonyms: Adam, disco biscuit, ecstasy, go, hug drug, X, XTC |
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| crosstalk | (noun) the presence of an unwanted signal via an accidental coupling | Synonyms: XT |
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| crustacean | (adjective) of or belonging to the class Crustacea | Synonyms: crustaceous |
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| (noun) any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton | - |
| crustaceous | (adjective) being or having or resembling a hard crust or shell | - |
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| (adjective) of or belonging to the class Crustacea | Synonyms: crustacean |
| crustal | (adjective) of or relating to or characteristic of the crust of the earth or moon | - |
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| cryostat | (noun) a thermostat that operates at very low temperatures | - |
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| crystal | (noun) a protective cover that protects the face of a watch | Synonyms: watch crystal, watch glass |
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| (noun) glassware made of quartz | - |
| (noun) a crystalline element used as a component in various electronic devices | - |
| (noun) a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces | Synonyms: crystallization |
| (noun) a solid formed by the solidification of a chemical and having a highly regular atomic structure | - |
| (noun) colorless glass made of almost pure silica | Synonyms: lechatelierite, quartz, quartz glass, vitreous silica |
| crystalise | (verb) assume crystalline form; become crystallized | Synonyms: crystalize, crystallize, effloresce |
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| (verb) cause to form crystals or assume crystalline form | Synonyms: crystalize, crystallise, crystallize |
| (verb) cause to take on a definite and clear shape | Synonyms: crystalize, crystallise, crystallize |
| (verb) make free from confusion or ambiguity; make clear | Synonyms: clear, clear up, crystalize, crystallise, crystallize, elucidate, enlighten, illuminate, shed light on, sort out, straighten out |
| crystalised | (adjective) having both internal structure and external form of a crystal | Synonyms: crystallized |
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| (adjective) (used especially of fruits) preserved by coating with or allowing to absorb sugar | Synonyms: candied, crystalized, glace |
| crystalize | (verb) assume crystalline form; become crystallized | Synonyms: crystalise, crystallize, effloresce |
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| (verb) cause to form crystals or assume crystalline form | Synonyms: crystalise, crystallise, crystallize |
| (verb) cause to take on a definite and clear shape | Synonyms: crystalise, crystallise, crystallize |
| (verb) make free from confusion or ambiguity; make clear | Synonyms: clear, clear up, crystalise, crystallise, crystallize, elucidate, enlighten, illuminate, shed light on, sort out, straighten out |
| crystalized | (adjective) (used especially of fruits) preserved by coating with or allowing to absorb sugar | Synonyms: candied, crystalised, glace |
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| crystalline | (adjective) consisting of or containing or of the nature of crystals | - |
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| (adjective) transmitting light; able to be seen through with clarity | Synonyms: crystal clear, limpid, lucid, pellucid, transparent |
| (adjective) distinctly or sharply outlined | - |
| crystallinity | (noun) (chemistry) The degree of structural order in a solid. | - |
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| crystallisation | (noun) the formation of crystals | Synonyms: crystallization, crystallizing |
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| crystallise | (verb) cause to form crystals or assume crystalline form | Synonyms: crystalise, crystalize, crystallize |
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| (verb) cause to take on a definite and clear shape | Synonyms: crystalise, crystalize, crystallize |
| (verb) make free from confusion or ambiguity; make clear | Synonyms: clear, clear up, crystalise, crystalize, crystallize, elucidate, enlighten, illuminate, shed light on, sort out, straighten out |