| affidavit | (noun) written declaration made under oath; a written statement sworn to be true before someone legally authorized to administer an oath | - |
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| akvavit | (noun) Scandinavian liquor usually flavored with caraway seeds | Synonyms: aquavit |
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| alphavirus | (noun) an arbovirus of the family Togaviridae that can cause a variety of encephalitis in horses | - |
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| aquavit | (noun) Scandinavian liquor usually flavored with caraway seeds | Synonyms: akvavit |
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| arenavirus | (noun) animal viruses belonging to the family Arenaviridae | - |
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| astronavigation | (noun) navigating according to the positions of the stars | Synonyms: celestial navigation |
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| atavism | (noun) a reappearance of an earlier characteristic | Synonyms: reversion, throwback |
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| atavist | (noun) an organism that has the characteristics of a more primitive type of that organism | Synonyms: throwback |
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| aviary | (noun) a building where birds are kept | Synonyms: bird sanctuary, volary |
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| aviation | (noun) travel via aircraft | Synonyms: air, air travel |
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| (noun) the art of operating aircraft | Synonyms: airmanship |
| (noun) the aggregation of a country's military aircraft | Synonyms: air power |
| (noun) the operation of aircraft to provide transportation | - |
| aviator | (noun) someone who operates an aircraft | Synonyms: aeronaut, flier, flyer |
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| aviatress | (noun) a woman aviator | Synonyms: airwoman, aviatrix |
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| aviatrix | (noun) a woman aviator | Synonyms: airwoman, aviatress |
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| avidity | (noun) a positive feeling of wanting to push ahead with something | Synonyms: avidness, eagerness, keenness |
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| avidness | (noun) a positive feeling of wanting to push ahead with something | Synonyms: avidity, eagerness, keenness |
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| avifauna | (noun) the birds of a particular region or period | - |
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| avionics | (noun) science and technology of electronic systems and devices for aeronautics and astronautics | - |
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| avitaminosis | (noun) any of several diseases caused by deficiency of one or more vitamins | Synonyms: hypovitaminosis |
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| behavior | (noun) manner of acting or controlling yourself | Synonyms: behaviour, conduct, doings |
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| (noun) (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation | Synonyms: behaviour |
| (noun) (behavioral attributes) the way a person behaves toward other people | Synonyms: behaviour, conduct, demeanor, demeanour, deportment |
| (noun) the action or reaction of something (as a machine or substance) under specified circumstances | Synonyms: behaviour |
| behaviorism | (noun) an approach to psychology that emphasizes observable measurable behavior | Synonyms: behavioristic psychology, behaviourism, behaviouristic psychology |
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| behaviorist | (noun) a psychologist who subscribes to behaviorism | Synonyms: behaviourist |
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| behaviour | (noun) manner of acting or controlling yourself | Synonyms: behavior, conduct, doings |
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| (noun) (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation | Synonyms: behavior |
| (noun) (behavioral attributes) the way a person behaves toward other people | Synonyms: behavior, conduct, demeanor, demeanour, deportment |
| (noun) the action or reaction of something (as a machine or substance) under specified circumstances | Synonyms: behavior |
| behaviourism | (noun) an approach to psychology that emphasizes observable measurable behavior | Synonyms: behaviorism, behavioristic psychology, behaviouristic psychology |
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| behaviourist | (noun) a psychologist who subscribes to behaviorism | Synonyms: behaviorist |
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| bioflavinoid | (noun) a vitamin that maintains the resistance of cell and capillary walls to permeation | Synonyms: citrin, vitamin P |
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| bonavist | (noun) perennial twining vine of Old World tropics having trifoliate leaves and racemes of fragrant purple pea-like flowers followed by maroon pods of edible seeds; grown as an ornamental and as a vegetable on the Indian subcontinent; sometimes placed in genus Dolichos | Synonyms: Dolichos lablab, Egyptian bean, hyacinth bean, Indian bean, Lablab purpureus |
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| bunyavirus | (noun) an animal virus belonging to the family Bunyaviridae; can be used as a bioweapon | - |
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| caviar | (noun) salted roe of sturgeon or other large fish; usually served as an hors d'oeuvre | Synonyms: caviare |
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| caviare | (noun) salted roe of sturgeon or other large fish; usually served as an hors d'oeuvre | Synonyms: caviar |
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| cavil | (noun) an evasion of the point of an argument by raising irrelevant distinctions or objections | Synonyms: quibble, quiddity |
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| caviler | (noun) a disputant who quibbles; someone who raises annoying petty objections | Synonyms: caviller, pettifogger, quibbler |
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| caviller | (noun) a disputant who quibbles; someone who raises annoying petty objections | Synonyms: caviler, pettifogger, quibbler |
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| cavity | (noun) (anatomy) a natural hollow or sinus within the body | Synonyms: bodily cavity, cavum |
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| (noun) a sizeable hole (usually in the ground) | Synonyms: pit |
| (noun) soft decayed area in a tooth; progressive decay can lead to the death of a tooth | Synonyms: caries, dental caries, tooth decay |
| (noun) space that is surrounded by something | Synonyms: enclosed space |
| circumnavigation | (noun) traveling around something (by ship or plane) | - |
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| clavichord | (noun) an early stringed instrument like a piano but with more delicate sound | - |
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| clavicle | (noun) bone linking the scapula and sternum | Synonyms: collarbone |
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| clavier | (noun) a bank of keys on a musical instrument | Synonyms: fingerboard, piano keyboard |
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| (noun) a stringed instrument that has a keyboard | Synonyms: Klavier |
| concavity | (noun) the property possessed by a concave shape | Synonyms: concaveness |
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| (noun) a shape that curves or bends inward | Synonyms: concave shape, incurvation, incurvature |
| coronavirus | (noun) a viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020 | Synonyms: 2019-nCoV acute respiratory disease, corona, coronavirus disease 2019, COVID-19, novel coronavirus pneumonia, Wuhan coronavirus, Wuhan flu, Wuhan pneumonia, Wuhan virus |
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| craving | (noun) an intense desire for some particular thing | - |
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| davit | (noun) a crane-like device (usually one of a pair) for suspending or lowering equipment (as a lifeboat) | - |
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| delavirdine | (noun) a non-nucleoside reverse transcriptase inhibitor (trade name Rescriptor) used to treat AIDS and HIV | Synonyms: Rescriptor |
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| depravity | (noun) a corrupt or depraved or degenerate act or practice | Synonyms: turpitude |
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| (noun) moral perversion; impairment of virtue and moral principles | Synonyms: corruption, degeneracy, depravation, putrefaction |
| engraving | (noun) making engraved or etched plates and printing designs from them | Synonyms: etching |
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| (noun) a block or plate or other hard surface that has been engraved | - |
| (noun) a print made from an engraving | - |
| favism | (noun) anemia resulting from eating fava beans; victims have an inherited blood abnormality and enzyme deficiency | - |
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| flavin | (noun) a ketone that forms the nucleus of certain natural yellow pigments like riboflavin | - |
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| flavivirus | (noun) animal viruses belonging to the family Flaviviridae | - |
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| gavial | (noun) large fish-eating Indian crocodilian with a long slender snout | Synonyms: Gavialis gangeticus |
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| gravida | (noun) a pregnant woman | - |
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| (noun) the number of the pregnancy that a woman is in | - |
| gravidation | (noun) technical terms for pregnancy | Synonyms: gravidity, gravidness |
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| gravidity | (noun) technical terms for pregnancy | Synonyms: gravidation, gravidness |
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| gravidness | (noun) technical terms for pregnancy | Synonyms: gravidation, gravidity |
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| gravimeter | (noun) a measuring instrument for determining the specific gravity of a liquid or solid | Synonyms: hydrometer |
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| (noun) a measuring instrument for measuring variations in the gravitational field of the earth | Synonyms: gravity meter |
| gravimetry | (noun) the measurement of specific gravity | Synonyms: hydrometry |
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| gravitas | (noun) formality in bearing and appearance | Synonyms: dignity, lordliness |
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| gravitation | (noun) a figurative movement toward some attraction | - |
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| (noun) movement downward resulting from gravitational attraction | - |
| (noun) (physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface | Synonyms: gravitational attraction, gravitational force, gravity |
| graviton | (noun) a gauge boson that mediates the (extremely weak) gravitational interactions between particles | - |
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| gravity | (noun) a manner that is serious and solemn | Synonyms: graveness, soberness, sobriety, somberness, sombreness |
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| (noun) a solemn and dignified feeling | Synonyms: solemnity |
| (noun) (physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface | Synonyms: gravitation, gravitational attraction, gravitational force |
| hairweaving | (noun) the act of interweaving a hairpiece with your own hair | - |
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| heaviness | (noun) the property of being comparatively great in weight | Synonyms: weightiness |
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| (noun) used of a line or mark | Synonyms: thickness |
| (noun) unwelcome burdensome difficulty | Synonyms: burdensomeness, onerousness, oppressiveness |
| (noun) an oppressive quality that is laborious and solemn and lacks grace or fluency | Synonyms: ponderousness |
| (noun) persisting sadness | - |
| heaving | (noun) throwing something heavy (with great effort) | Synonyms: heave |
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| (noun) breathing heavily (as after exertion) | Synonyms: panting |
| (noun) the act of lifting something with great effort | Synonyms: heave |
| (noun) an upward movement (especially a rhythmical rising and falling) | Synonyms: heave |
| hepadnavirus | (noun) a group of animal DNA viruses including viruses of ducks and woodchucks and squirrels and others as well as the virus causing hepatitis B in humans | - |
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| hepatoflavin | (noun) a B vitamin that prevents skin lesions and weight loss | Synonyms: lactoflavin, ovoflavin, riboflavin, vitamin B2, vitamin G |
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| indinavir | (noun) a protease inhibitor (trade name Crixivan) used for treating HIV | Synonyms: Crixivan |
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| lactoflavin | (noun) a B vitamin that prevents skin lesions and weight loss | Synonyms: hepatoflavin, ovoflavin, riboflavin, vitamin B2, vitamin G |
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| lavishness | (noun) the activity of excessive spending | Synonyms: extravagance, high life, highlife, prodigality |
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| (noun) the quality possessed by something that is excessively expensive | Synonyms: luxury, sumptuosity, sumptuousness |
| leaving | (noun) the act of departing | Synonyms: departure, going, going away |
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| lifesaving | (noun) saving the lives of drowning persons | - |
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| lyssavirus | (noun) a neurotropic non-arbovirus of the family Rhabdoviridae that causes rabies | - |
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| maravilla | (noun) leafy wildflower having fragrant slender white or pale pink trumpet-shaped flowers; southwestern United States and northern Mexico | Synonyms: Mirabilis longiflora, sweet four o'clock |
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| (noun) wildflower having vibrant deep pink tubular evening-blooming flowers; found in sandy and desert areas from southern California to southern Colorado and into Mexico | Synonyms: Colorado four o'clock, desert four o'clock, Mirabilis multiflora |
| mavin | (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, adept, champion, genius, hotshot, maven, sensation, star, superstar, virtuoso, whiz, whizz, wiz, wizard |
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| mavis | (noun) common Old World thrush noted for its song | Synonyms: song thrush, throstle, Turdus philomelos |
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| misbehavior | (noun) improper or wicked or immoral behavior | Synonyms: misbehaviour, misdeed |
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| misbehaviour | (noun) improper or wicked or immoral behavior | Synonyms: misbehavior, misdeed |
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| navicular | (noun) the largest wrist bone on the thumb side | Synonyms: os scaphoideum, scaphoid bone |
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| navigability | (noun) the quality of being suitable for the passage of a ship or aircraft | - |
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| navigation | (noun) the guidance of ships or airplanes from place to place | Synonyms: pilotage, piloting |
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| (noun) the work of a sailor | Synonyms: sailing, seafaring |
| (noun) ship traffic | - |
| navigator | (noun) in earlier times, a person who explored by ship | - |
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| (noun) the member of an aircrew who is responsible for the aircraft's course | - |
| (noun) the ship's officer in charge of navigation | Synonyms: sailing master |
| nelfinavir | (noun) a protease inhibitor (trade name Viracept) used in treating HIV usually in combination with other drugs | Synonyms: Viracept |
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| neobehaviorism | (noun) a school of psychology based on the general principles of behaviorism but broader and more flexible in concept. It stresses experimental research and laboratory analyses in the study of overt behavior and in various subjective phenomena that cannot be directly observed and measured, such as fantasies, love, stress, empathy, trust, and personality. | - |
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| ovoflavin | (noun) a B vitamin that prevents skin lesions and weight loss | Synonyms: hepatoflavin, lactoflavin, riboflavin, vitamin B2, vitamin G |
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| papovavirus | (noun) any of a group of animal viruses associated with or causing papillomas or polyomas | - |
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| pavilion | (noun) large and often sumptuous tent | Synonyms: marquee |
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| paving | (noun) the act of applying paving materials to an area | Synonyms: pavage |
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| (noun) the paved surface of a thoroughfare | Synonyms: pavement |
| (noun) material used to pave an area | Synonyms: pavement, paving material |
| pavior | (noun) a machine for laying pavement | Synonyms: paving machine, paviour |
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| paviour | (noun) a machine for laying pavement | Synonyms: paving machine, pavior |
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| pavis | (noun) (Middle Ages) a large heavy oblong shield protecting the whole body; originally carried but sometimes set up in permanent position | Synonyms: pavise |
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| pavise | (noun) (Middle Ages) a large heavy oblong shield protecting the whole body; originally carried but sometimes set up in permanent position | Synonyms: pavis |
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| photoengraving | (noun) an engraving used to reproduce an illustration | Synonyms: halftone, halftone engraving |
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| picornavirus | (noun) a group of single-strand RNA viruses with a protein coat | - |
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| primigravida | (noun) (obstetrics) a woman who is pregnant for the first time | Synonyms: gravida I |
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| protoavis | (noun) most primitive avian type known; extinct bird of the Triassic having bird-like jaw and hollow limbs and breastbone with dinosaur-like tail and hind limbs | - |
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| ravigote | (noun) veloute sauce seasoned with chopped chervil, chives, tarragon, shallots and capers | Synonyms: ravigotte |
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| ravigotte | (noun) veloute sauce seasoned with chopped chervil, chives, tarragon, shallots and capers | Synonyms: ravigote |
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| ravine | (noun) a deep narrow steep-sided valley (especially one formed by running water) | - |
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| raving | (noun) declaiming wildly | - |
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| ravioli | (noun) small circular or square cases of dough with savory fillings | Synonyms: cappelletti |
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| ravisher | (noun) someone who assaults others sexually | Synonyms: debaucher, violator |
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| (noun) a very attractive or seductive looking woman | Synonyms: beauty, dish, knockout, looker, lulu, mantrap, peach, smasher, stunner, sweetheart |
| ravishment | (noun) the crime of forcing a person to submit to sexual intercourse against his or her will | Synonyms: assault, rape, violation |
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| (noun) a feeling of delight at being filled with wonder and enchantment | Synonyms: entrancement |
| ribavirin | (noun) an inhaled antiviral agent (trade name Virazole) that may be used to treat serious virus infections | Synonyms: Virazole |
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