| congregant | (noun) a member of a congregation (especially that of a church or synagogue) | - |
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| congruent | (adjective) coinciding when superimposed | - |
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| (adjective) corresponding in character or kind | Synonyms: congruous |
| conjoint | (adjective) consisting of two or more associated entities | Synonyms: conjoined |
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| conodont | (noun) small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes | - |
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| (noun) the tiny fossil cone-shaped tooth of a primitive vertebrate of order Conodonta | - |
| consent | (noun) permission for something to happen | - |
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| (verb) give an affirmative reply to; respond favorably to | Synonyms: accept, go for |
| consentient | (adjective) in complete agreement | Synonyms: consentaneous, unanimous |
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| consequent | (adjective) occurring with or following as a consequence | Synonyms: accompanying, attendant, collateral, concomitant, ensuant, incidental, resultant, sequent |
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| consignment | (noun) the official act of consigning a person to confinement (as in a prison or mental hospital) | Synonyms: commitment, committal |
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| (noun) the delivery of goods for sale or disposal | - |
| (noun) goods carried by a large vehicle | Synonyms: cargo, freight, lading, load, loading, payload, shipment |
| consistent | (adjective) (sometimes followed by `with') in agreement or consistent or reliable | - |
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| (adjective) marked by an orderly, logical, and aesthetically consistent relation of parts | Synonyms: coherent, logical, ordered |
| (adjective) capable of being reproduced | Synonyms: reproducible |
| (adjective) the same throughout in structure or composition | Synonyms: uniform |
| consonant | (adjective) in keeping | Synonyms: accordant, agreeable, concordant, conformable |
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| (adjective) involving or characterized by harmony | Synonyms: harmonic, harmonical, harmonised, harmonized |
| (noun) a speech sound that is not a vowel | - |
| (noun) a letter of the alphabet standing for a spoken consonant | - |
| 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 | - |
| constituent | (adjective) constitutional in the structure of something (especially your physical makeup) | Synonyms: constitutional, constitutive, organic |
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| (noun) an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system | Synonyms: component, element |
| (noun) an abstract part of something | Synonyms: component, element, factor, ingredient |
| (noun) (grammar) a word or phrase or clause forming part of a larger grammatical construction | Synonyms: grammatical constituent |
| (noun) a member of a constituency; a citizen who is represented in a government by officials for whom he or she votes | - |
| (noun) something determined in relation to something that includes it | Synonyms: component, component part, part, portion |
| constraint | (noun) the act of constraining; the threat or use of force to control the thoughts or behavior of others | - |
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| (noun) a device that retards something's motion | Synonyms: restraint |
| (noun) the state of being physically constrained | Synonyms: restraint |
| consultant | (noun) an expert who gives advice | Synonyms: adviser, advisor |
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| containment | (noun) the act of containing; keeping something from spreading | - |
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| (noun) (physics) a system designed to prevent the accidental release of radioactive material from a reactor | - |
| (noun) a policy of creating strategic alliances in order to check the expansion of a hostile power or ideology or to force it to negotiate peacefully | - |
| contaminant | (noun) a substance that contaminates | Synonyms: contamination |
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| content | (adjective) satisfied or showing satisfaction with things as they are | Synonyms: contented |
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| (noun) something (a person or object or scene) selected by an artist or photographer for graphic representation | Synonyms: depicted object, subject |
| (noun) the sum or range of what has been perceived, discovered, or learned | Synonyms: cognitive content, mental object |
| (noun) content communicating a message; what something is about | Synonyms: message, subject matter, substance |
| (noun) (usually plural) everything that is included in a collection and that is held or included in something | Synonyms: contents |
| (noun) the amount that can be contained | Synonyms: capacity |
| (noun) the proportion of a substance that is contained in a mixture or alloy etc. | - |
| (noun) the state of being contented with your situation in life | Synonyms: contentedness |
| (verb) satisfy in a limited way | - |
| (verb) make content | - |
| contentment | (noun) happiness with one's situation in life | - |
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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 |
| continent | (adjective) having control over urination and defecation | - |
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| (adjective) abstaining from sexual intercourse | Synonyms: celibate |
| (noun) one of the large landmasses of the earth | - |
| contingent | (adjective) being determined by conditions or circumstances that follow | Synonyms: contingent on, contingent upon, dependant on, dependant upon, dependent on, dependent upon, depending on |
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| (adjective) possible but not certain to occur | - |
| (adjective) uncertain because of uncontrollable circumstances | - |
| (noun) a temporary military unit | Synonyms: detail |
| (noun) a gathering of persons representative of some larger group | - |
| continuant | (adjective) of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then') | Synonyms: fricative, sibilant, spirant, strident |
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| (noun) consonant articulated by constricting (but not closing) the vocal tract | Synonyms: continuant consonant |
| convalescent | (adjective) returning to health after illness or debility | Synonyms: recovering |
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| (noun) a person who is recovering from illness | - |
| convenient | (adjective) suited to your comfort or purpose or needs | - |
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| (adjective) large and roomy (`convenient' is archaic in this sense) | Synonyms: commodious |
| convent | (noun) a religious residence especially for nuns | - |
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| (noun) a community of people in a religious order (especially nuns) living together | - |
| convergent | (adjective) tending to come together from different directions | - |
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| conversant | (adjective) (usually followed by `with') well informed about or knowing thoroughly | Synonyms: familiar |
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| coolant | (noun) a fluid agent (gas or liquid) that produces cooling; especially one used to cool a system by transferring heat away from one part to another | - |
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| coreferent | (adjective) related by sharing a symbolic link to a concrete object or an abstraction | - |
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| corespondent | (noun) the codefendant charged with adultery with the estranged spouse in a divorce proceeding | Synonyms: co-respondent |
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| cormorant | (noun) large voracious dark-colored long-necked seabird with a distensible pouch for holding fish; used in Asia to catch fish | Synonyms: Phalacrocorax carbo |
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| corposant | (noun) an electrical discharge accompanied by ionization of surrounding atmosphere | Synonyms: corona, corona discharge, electric glow, Saint Elmo's fire, Saint Elmo's light, Saint Ulmo's fire, Saint Ulmo's light, St. Elmo's fire |
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| corpulent | (adjective) excessively fat | Synonyms: obese, rotund, weighty |
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| correspondent | (adjective) similar or equivalent in some respects though otherwise dissimilar | Synonyms: analogous |
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| (noun) someone who communicates by means of letters | Synonyms: letter writer |
| (noun) a journalist employed to provide news stories for newspapers or broadcast media | Synonyms: newswriter |
| corroborant | (adjective) used of a medicine that is strengthening | - |
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| corticoafferent | (adjective) of a nerve fiber or impulse originating outside and passing toward the cerebral cortex | Synonyms: corticipetal |
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| corticoefferent | (adjective) of a nerve fiber passing outward from the cerebral cortex | Synonyms: corticifugal, corticofugal |
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| coruscant | (adjective) having brief brilliant points or flashes of light | Synonyms: aglitter, fulgid, glinting, glistering, glittering, glittery, scintillant, scintillating, sparkly |
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| cosecant | (noun) ratio of the hypotenuse to the opposite side of a right-angled triangle | Synonyms: cosec |
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| cotangent | (noun) ratio of the adjacent to the opposite side of a right-angled triangle | Synonyms: cotan |
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| cotenant | (noun) one of two or more tenants holding title to the same property | - |
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| couchant | (adjective) lying on the stomach with head raised with legs pointed forward | - |
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| count | (noun) the act of counting; reciting numbers in ascending order | Synonyms: counting, enumeration, numeration, reckoning, tally |
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| (noun) a nobleman (in various countries) having rank equal to a British earl | - |
| (noun) the total number counted | - |
| (verb) include as if by counting | - |
| (verb) have faith or confidence in | Synonyms: bank, bet, calculate, depend, look, reckon, rely, swear |
| (verb) take account of | Synonyms: reckon |
| (verb) determine the number or amount of | Synonyms: enumerate, number, numerate |
| (verb) name or recite the numbers in ascending order | - |
| (verb) show consideration for; take into account | Synonyms: consider, weigh |
| (verb) have weight; have import, carry weight | Synonyms: matter, weigh |
| (verb) put into a group | Synonyms: number |
| (verb) have a certain value or carry a certain weight | - |
| counterargument | (noun) an argument offered in opposition to another argument | - |
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| counterbombardment | (noun) bombardment intended to destroy or neutralize enemy weapons | - |
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| countercurrent | (noun) actions counter to the main group activity | Synonyms: crosscurrent |
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| (noun) a stretch of turbulent water in a river or the sea caused by one current flowing into or across another current | Synonyms: crosscurrent, rip, riptide, tide rip |
| counterinsurgent | (adjective) of or relating or characteristic of actions taken by a government to defeat insurgency | - |
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| counterirritant | (noun) a medicine applied locally to produce superficial inflammation in order to reduce deeper inflammation | - |
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| counterpoint | (noun) a musical form involving the simultaneous sound of two or more melodies | - |
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| (verb) write in counterpoint | - |
| (verb) to show differences when compared; be different | Synonyms: contrast |
| covalent | (adjective) of or relating to or characterized by covalence | - |
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| covariant | (adjective) changing so that interrelations with another variable quantity or set of quantities remain unchanged | - |
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| covenant | (noun) a signed written agreement between two or more parties (nations) to perform some action | Synonyms: compact, concordat |
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| (noun) (Bible) an agreement between God and his people in which God makes certain promises and requires certain behavior from them in return | - |
| (verb) enter into a covenant or formal agreement | - |
| (verb) enter into a covenant | - |
| crapulent | (adjective) suffering from excessive eating or drinking | Synonyms: crapulous |
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| crescent | (adjective) resembling the new moon in shape | Synonyms: crescent-shaped, lunate, semilunar |
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| (noun) any shape resembling the curved shape of the moon in its first or last quarters | - |
| croissant | (noun) very rich flaky crescent-shaped roll | Synonyms: crescent roll |
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| cromulent | (adjective) Legitimate or valid (frequently used ironically) | - |
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| crosscurrent | (noun) actions counter to the main group activity | Synonyms: countercurrent |
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| (noun) a stretch of turbulent water in a river or the sea caused by one current flowing into or across another current | Synonyms: countercurrent, rip, riptide, tide rip |
| cuckoopint | (noun) common European arum with lanceolate spathe and short purple spadix; emerges in early spring; source of a starch called arum | Synonyms: Arum maculatum, jack-in-the-pulpit, lords-and-ladies |
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| cunt | (noun) obscene terms for female genitals | Synonyms: puss, pussy, slit, snatch, twat |
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| (noun) a person (usually but not necessarily a woman) who is thoroughly disliked | Synonyms: bitch |
| curettement | (noun) surgery to remove tissue or growths from a bodily cavity (as the uterus) by scraping with a curette | Synonyms: curettage |
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| currant | (noun) any of several tart red or black berries used primarily for jellies and jams | - |
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| (noun) small dried seedless raisin grown in the Mediterranean region and California; used in cooking | - |
| (noun) any of various deciduous shrubs of the genus Ribes bearing currants | Synonyms: currant bush |
| current | (adjective) occurring in or belonging to the present time | - |
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| (noun) a steady flow of a fluid (usually from natural causes) | Synonyms: stream |
| (noun) dominant course (suggestive of running water) of successive events or ideas | Synonyms: flow, stream |
| (noun) a flow of electricity through a conductor | Synonyms: electric current |
| curtailment | (noun) the act of withholding or withdrawing some book or writing from publication or circulation | Synonyms: suppression |
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| (noun) the reduction of expenditures in order to become financially stable | Synonyms: downsizing, retrenchment |
| (noun) the temporal property of being cut short | - |
| cynodont | (noun) small carnivorous reptiles | - |
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| cyprinodont | (noun) any member of the family Cyprinodontidae | - |
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| daunt | (verb) cause to lose courage; to be daunted; to be scared away | Synonyms: dash, frighten away, frighten off, pall, scare, scare away, scare off |
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| dealignment | (noun) a process whereby voters are moved toward nonpartisanship thus weakening the structure of political parties | - |
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| debarment | (noun) the act of prevention by legal means | - |
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| (noun) the state of being debarred (excluded from enjoying certain possessions or rights or practices) | - |
| debasement | (noun) changing to a lower state (a less respected state) | Synonyms: degradation |
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| (noun) being mixed with extraneous material; the product of adulterating | Synonyms: adulteration |
| debridement | (noun) surgical removal of foreign material and dead tissue from a wound in order to prevent infection and promote healing | - |
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| decadent | (adjective) marked by excessive self-indulgence and moral decay | Synonyms: fin-de-siecle |
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| (adjective) luxuriously self-indulgent | - |
| (noun) a person who has fallen into a decadent state (morally or artistically) | - |
| decalescent | (adjective) absorbing heat without increase in temperature when heated beyond a certain point | - |
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| decampment | (noun) breaking camp | - |
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| (noun) the act of running away secretly (as to avoid arrest) | Synonyms: abscondment |
| decant | (verb) pour out gradually, so as to separate out sediment | Synonyms: pour, pour out |
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| decedent | (noun) someone who is no longer alive | Synonyms: dead person, dead soul, deceased, deceased person, departed |
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| decent | (adjective) conforming to conventions of sexual behavior | - |
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| (adjective) meeting requirements | Synonyms: acceptable, satisfactory |
| (adjective) observing conventional sexual mores in speech or behavior or dress | - |
| (adjective) in harmony with the spirit of particular persons or occasion | Synonyms: fitting |
| (adjective) socially or conventionally correct; refined or virtuous | Synonyms: nice |
| (adjective) sufficiently clothed to see visitors or appear in public | - |
| (adverb) in the right manner; correctly; suitably | Synonyms: decently, properly, right |
| decipherment | (noun) the activity of making clear or converting from code into plain text | Synonyms: decoding, decryption |
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| decoagulant | (noun) medicine that prevents or retards the clotting of blood | Synonyms: anticoagulant, anticoagulant medication |
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| decongestant | (noun) a drug that decreases pulmonary congestion | - |
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| decrement | (noun) the amount by which something decreases | Synonyms: decrease |
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| (noun) a process of becoming smaller or shorter | Synonyms: decrease |
| decumbent | (adjective) lying down; in a position of comfort or rest | Synonyms: accumbent, recumbent |
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| defacement | (noun) the act of damaging the appearance or surface of something | Synonyms: disfiguration, disfigurement, mutilation |
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| defendant | (noun) a person or institution against whom an action is brought in a court of law; the person being sued or accused | Synonyms: suspect |
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| deferent | (adjective) showing deference | Synonyms: deferential, regardful |
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| deferment | (noun) act of putting off to a future time | Synonyms: deferral, postponement |
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| defervescent | (adjective) of or relating to the reduction of a fever | - |
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| defiant | (adjective) boldly resisting authority or an opposing force | Synonyms: noncompliant |
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| deficient | (adjective) of a quantity not able to fulfill a need or requirement | Synonyms: insufficient |
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| (adjective) inadequate in amount or degree | Synonyms: lacking, wanting |
| (adjective) falling short of some prescribed norm | Synonyms: inferior, substandard |
| defilement | (noun) the state of being polluted | Synonyms: befoulment, pollution |
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| defoliant | (noun) a chemical that is sprayed on plants and causes their leaves to fall off | - |
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| defrayment | (noun) the act of paying money | Synonyms: defrayal, payment |
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| dehiscent | (adjective) (of e.g. fruits and anthers) opening spontaneously at maturity to release seeds | - |
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| delinquent | (adjective) past due; not paid at the scheduled time | Synonyms: overdue |
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| (adjective) guilty of a misdeed | - |
| (adjective) failing in what duty requires | Synonyms: derelict, neglectful, remiss |
| (noun) a young offender | Synonyms: juvenile delinquent |
| deliquescent | (adjective) (especially of certain salts) becoming liquid by absorbing moisture from the air | - |
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| demulcent | (adjective) having a softening or soothing effect especially to the skin | Synonyms: emollient, salving, softening |
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| (noun) a medication (in the form of an oil or salve etc.) that soothes inflamed or injured skin | - |
| denaturant | (noun) any substance that serves as a denaturing agent | - |
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| denouement | (noun) the final resolution of the main complication of a literary or dramatic work | - |
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| (noun) the outcome of a complex sequence of events | - |
| denouncement | (noun) a public act of denouncing | Synonyms: denunciation |
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| dent | (noun) an impression in a surface (as made by a blow) | Synonyms: ding, gouge, nick |
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| (noun) an appreciable consequence (especially a lessening) | - |
| (noun) a depression scratched or carved into a surface | Synonyms: incision, prick, scratch, slit |
| (verb) make a depression into | Synonyms: indent |
| deodorant | (noun) a toiletry applied to the skin in order to mask unpleasant odors | Synonyms: deodourant |
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