| absorptance | (noun) a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber | Synonyms: absorption coefficient, coefficient of absorption |
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| acceptance | (noun) the act of accepting with approval; favorable reception | Synonyms: acceptation, adoption, espousal |
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| (noun) the act of taking something that is offered | - |
| (noun) a disposition to tolerate or accept people or situations | Synonyms: sufferance, toleration |
| (noun) the mental attitude that something is believable and should be accepted as true | Synonyms: credence |
| (noun) (contract law) words signifying consent to the terms of an offer (thereby creating a contract) | - |
| (noun) a time draft drawn on and accepted by a bank | Synonyms: banker's acceptance |
| (noun) the state of being acceptable and accepted | - |
| acceptant | (adjective) accepting willingly | Synonyms: acceptive |
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| accountancy | (noun) the occupation of maintaining and auditing records and preparing financial reports for a business | Synonyms: accounting |
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| accountant | (noun) someone who maintains and audits business accounts | Synonyms: comptroller, controller |
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| accountantship | (noun) the position of accountant | - |
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| acetanilid | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilide, phenylacetamide |
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| acetanilide | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilid, phenylacetamide |
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| acquaintance | (noun) personal knowledge or information about someone or something | Synonyms: conversance, conversancy, familiarity |
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| (noun) a person with whom you are acquainted | Synonyms: friend |
| (noun) a relationship less intimate than friendship | Synonyms: acquaintanceship |
| acquaintanceship | (noun) a relationship less intimate than friendship | Synonyms: acquaintance |
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| acquittance | (noun) a legal document evidencing the discharge of a debt or obligation | Synonyms: release |
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| adjutant | (noun) large Indian stork with a military gait | Synonyms: adjutant bird, adjutant stork, Leptoptilus dubius |
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| (noun) an officer who acts as military assistant to a more senior officer | Synonyms: aide-de-camp, aide |
| admittance | (noun) the act of admitting someone to enter | Synonyms: admission |
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| (noun) the right to enter | Synonyms: access, accession, admission, entree |
| anatotitan | (noun) one of the largest and most famous duck-billed dinosaurs | - |
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| annuitant | (noun) the recipient of an annuity | - |
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| antitank | (adjective) designed for defense against armored vehicles | - |
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| arccotangent | (noun) the inverse function of the cotangent; the angle that has a cotangent equal to a given number | Synonyms: arc cotangent, inverse cotangent |
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| arctan | (noun) the inverse function of the tangent; the angle that has a tangent equal to a given number | Synonyms: arc tangent, arctangent, inverse tangent |
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| arctangent | (noun) the inverse function of the tangent; the angle that has a tangent equal to a given number | Synonyms: arc tangent, arctan, inverse tangent |
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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 |
| 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 |
| bandstand | (noun) a platform where a (brass) band can play in the open air | Synonyms: outdoor stage, stand |
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| blatancy | (noun) the property of being both obvious and offensive | - |
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| blatant | (adjective) conspicuously and offensively loud; given to vehement outcry | Synonyms: clamant, clamorous, strident, vociferous |
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| (adjective) without any attempt at concealment; completely obvious | Synonyms: blazing, conspicuous |
| blatantly | (adverb) in a blatant manner | - |
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| botanic | (adjective) of or relating to plants or botany | Synonyms: botanical |
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| botanical | (adjective) of or relating to plants or botany | Synonyms: botanic |
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| (noun) a drug made from part of a plant (as the bark or root or leaves) | - |
| botanise | (verb) collect and study plants | Synonyms: botanize |
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| botanist | (noun) a biologist specializing in the study of plants | Synonyms: phytologist, plant scientist |
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| botanize | (verb) collect and study plants | Synonyms: botanise |
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| botany | (noun) the branch of biology that studies plants | Synonyms: phytology |
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| (noun) all the plant life in a particular region or period | Synonyms: flora, vegetation |
| butane | (noun) occurs in natural gas; used in the manufacture of rubber and fuels | - |
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| butanol | (noun) a flammable alcohol derived from butanes and used for solvents | Synonyms: butyl alcohol |
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| butanone | (noun) colorless soluble flammable liquid ketone used as a solvent for resins and as a paint remover and in lacquers and cements and adhesives and cleaning fluids and celluloid | Synonyms: methyl ethyl ketone |
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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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| caftan | (noun) a (cotton or silk) cloak with full sleeves and sash reaching down to the ankles; worn by men in the Levant | Synonyms: kaftan |
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| (noun) a woman's dress style that imitates the caftan cloaks worn by men in the Near East | Synonyms: kaftan |
| cantankerous | (adjective) having a difficult and contrary disposition | Synonyms: crotchety, ornery |
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| (adjective) stubbornly obstructive and unwilling to cooperate | Synonyms: bloody-minded |
| cantankerously | (adverb) in a bad mood | - |
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| capacitance | (noun) an electrical device characterized by its capacity to store an electric charge | Synonyms: capacitor, condenser, electrical condenser |
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| (noun) an electrical phenomenon whereby an electric charge is stored | Synonyms: capacity, electrical capacity |
| 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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| catananche | (noun) any of several plants of the genus Catananche having long-stalked heads of blue or yellow flowers | - |
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| charlatan | (noun) a flamboyant deceiver; one who attracts customers with tricks or jokes | Synonyms: mountebank |
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| charlatanism | (noun) the dishonesty of a charlatan | Synonyms: quackery |
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| chemoattractant | (noun) a substance inducing positive chemotaxis in motile cells. | - |
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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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| cismontane | (adjective) on this (the speaker's) side of the mountains | - |
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| coetaneous | (adjective) of the same period | Synonyms: coeval, contemporaneous |
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| coltan | (noun) a valuable black mineral combining niobite and tantalite; used in cell phones and computer chips | Synonyms: columbite-tantalite |
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| combatant | (adjective) engaging in or ready for combat | - |
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| (noun) someone who fights (or is fighting) | Synonyms: battler, belligerent, fighter, scrapper |
| concomitance | (noun) occurrence or existence together or in connection with one another | - |
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| concomitant | (adjective) occurring with or following as a consequence | Synonyms: accompanying, attendant, collateral, consequent, ensuant, incidental, resultant, sequent |
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| (noun) an event or situation that happens at the same time as or in connection with another | Synonyms: accompaniment, attendant, co-occurrence |
| conductance | (noun) a material's capacity to conduct electricity; measured as the reciprocal of electrical resistance | - |
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| consentaneous | (adjective) in complete agreement | Synonyms: consentient, unanimous |
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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 |
| 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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| consultancy | (noun) the practice of giving expert advice within a particular field | - |
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| consultant | (noun) an expert who gives advice | Synonyms: adviser, advisor |
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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 |
| cosmopolitan | (adjective) growing or occurring in many parts of the world | Synonyms: widely distributed |
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| (adjective) composed of people from or at home in many parts of the world; especially not provincial in attitudes or interests | - |
| (adjective) of worldwide scope or applicability | Synonyms: ecumenical, general, oecumenical, universal, world-wide, worldwide |
| (noun) a sophisticated person who has travelled in many countries | Synonyms: cosmopolite |
| cosmopolitanity | (noun) a state or quality of being cosmopolitan | - |
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| cotan | (noun) ratio of the adjacent to the opposite side of a right-angled triangle | Synonyms: cotangent |
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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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| counterirritant | (noun) a medicine applied locally to produce superficial inflammation in order to reduce deeper inflammation | - |
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| cryptanalysis | (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalytics, cryptography, cryptology |
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| cryptanalyst | (noun) decoder skilled in the analysis of codes and cryptograms | Synonyms: cryptographer, cryptologist |
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| cryptanalytic | (adjective) of or relating to cryptanalysis | Synonyms: cryptographic, cryptographical, cryptologic, cryptological |
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| cryptanalytics | (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalysis, cryptography, cryptology |
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| cutaneal | (adjective) relating to or existing on or affecting the skin | Synonyms: cutaneous, dermal |
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| cutaneous | (adjective) relating to or existing on or affecting the skin | Synonyms: cutaneal, dermal |
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| debutante | (noun) a young woman making her debut into society | Synonyms: deb |
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| decongestant | (noun) a drug that decreases pulmonary congestion | - |
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| dilettante | (adjective) showing frivolous or superficial interest; amateurish | Synonyms: dilettanteish, dilettantish, sciolistic |
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| (noun) an amateur who engages in an activity without serious intentions and who pretends to have knowledge | Synonyms: dabbler, sciolist |
| dilettanteish | (adjective) showing frivolous or superficial interest; amateurish | Synonyms: dilettante, dilettantish, sciolistic |
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| dilettantish | (adjective) showing frivolous or superficial interest; amateurish | Synonyms: dilettante, dilettanteish, sciolistic |
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| dilutant | (noun) a diluting agent | Synonyms: diluent, thinner |
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| disentangle | (verb) smoothen and neaten with or as with a comb | Synonyms: comb, comb out |
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| (verb) extricate from entanglement | Synonyms: straighten out, unsnarl |
| (verb) separate the tangles of | Synonyms: unwind |
| (verb) release from entanglement of difficulty | Synonyms: disencumber, extricate, untangle |
| (verb) free from involvement or entanglement | Synonyms: disembroil, disinvolve |
| disentangled | (adjective) straightened out | Synonyms: loosened, unsnarled |
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| disentanglement | (noun) the act of releasing from a snarled or tangled condition | Synonyms: extrication, unsnarling, untangling |
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| disentangler | (noun) a person who removes tangles; someone who takes something out of a tangled state | Synonyms: unraveler, unraveller |
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| disinfectant | (adjective) preventing infection by inhibiting the growth or action of microorganisms | Synonyms: bactericidal, germicidal |
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| (noun) an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease | Synonyms: antimicrobial, antimicrobic, germicide |
| disinheritance | (noun) the act by a donor that terminates the right of a person to inherit | - |
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| disputant | (noun) a person who disputes; who is good at or enjoys controversy | Synonyms: controversialist, eristic |
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| distance | (noun) the property created by the space between two objects or points | - |
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| (noun) size of the gap between two places | Synonyms: length |
| (noun) indifference by personal withdrawal | Synonyms: aloofness |
| (noun) a distant region | - |
| (noun) the interval between two times | Synonyms: space |
| (noun) a remote point in time | - |
| (verb) go far ahead of | Synonyms: outdistance, outstrip |
| (verb) keep at a distance | - |
| distant | (adjective) separated in space or coming from or going to a distance | - |
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| (adjective) far apart in relevance or relationship or kinship | Synonyms: remote |
| (adjective) remote in manner | Synonyms: aloof, upstage |
| (adjective) located far away spatially | Synonyms: remote |
| (adjective) separate or apart in time | Synonyms: remote, removed |
| distantly | (adverb) from or at a distance | - |
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| dittany | (noun) Eurasian perennial herb with white flowers that emit flammable vapor in hot weather | Synonyms: burning bush, Dictamnus alba, fraxinella, gas plant |
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| elastance | (noun) The capacity of a dielectric for opposing an electric charge | Synonyms: electrical elastance |
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| entangle | (verb) twist together or entwine into a confusing mass | Synonyms: mat, snarl, tangle |
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| (verb) entrap | Synonyms: mire |