| entasis | (noun) a slight convexity in the shaft of a column; compensates for the illusion of concavity that viewers experience when the sides are perfectly straight | - |
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| entertainer | (noun) a person who tries to please or amuse | - |
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| entertainment | (noun) an activity that is diverting and that holds the attention | Synonyms: amusement |
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| environmentalism | (noun) the activity of protecting the environment from pollution or destruction | - |
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| (noun) the philosophical doctrine that environment is more important than heredity in determining intellectual growth | - |
| environmentalist | (noun) someone who works to protect the environment from destruction or pollution | Synonyms: conservationist |
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| epistasis | (noun) the suppression of a gene by the effect of an unrelated gene | Synonyms: hypostasis |
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| epistaxis | (noun) bleeding from the nose | Synonyms: nosebleed |
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| epitaph | (noun) an inscription on a tombstone or monument in memory of the person buried there | - |
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| (noun) a summary statement of commemoration for a dead person | - |
| epitaxy | (noun) growing a crystal layer of one mineral on the crystal base of another mineral in such a manner that its crystalline orientation is the same as that of the substrate | - |
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| eptatretus | (noun) a fossil hagfish of the genus Eptatretus | - |
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| equalitarian | (noun) a person who believes in the equality of all people | Synonyms: egalitarian |
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| equalitarianism | (noun) the doctrine of the equality of mankind and the desirability of political and economic and social equality | Synonyms: egalitarianism |
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| equatability | (noun) capability of being equated | - |
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| equitation | (noun) the sport of sitting on the back of a horse while controlling its movements | Synonyms: horseback riding, riding |
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| ergotamine | (noun) an alkaloid derived from ergot that is less toxic than ergot; causes constriction of blood vessels and is used to treat migraine | - |
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| eructation | (noun) a reflex that expels gas noisily from the stomach through the mouth | Synonyms: belch, belching, burp, burping |
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| (noun) (of volcanoes) pouring out fumes or lava (or a deposit so formed) | Synonyms: eruption, extravasation |
| establishment | (noun) the act of forming or establishing something | Synonyms: constitution, formation, organisation, organization |
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| (noun) a public or private structure (business or governmental or educational) including buildings and equipment for business or residence | - |
| (noun) the cognitive process of establishing a valid proof | Synonyms: validation |
| (noun) an organization founded and united for a specific purpose | Synonyms: institution |
| (noun) any large organization | - |
| (noun) the persons (or committees or departments etc.) who make up a body for the purpose of administering something | Synonyms: administration, brass, governance, governing body, organisation, organization |
| (noun) (ecology) the process by which a plant or animal becomes established in a new habitat | Synonyms: ecesis |
| establishmentarianism | (noun) the doctrine of supporting the social or political establishment | Synonyms: establishmentism |
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| establishmentism | (noun) the doctrine of supporting the social or political establishment | Synonyms: establishmentarianism |
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| estaminet | (noun) a small (and usually shabby) cafe selling wine and beer and coffee | - |
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| estate | (noun) a major social class or order of persons regarded collectively as part of the body politic of the country (especially in the United Kingdom) and formerly possessing distinct political rights | Synonyms: estate of the realm, the three estates |
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| (noun) extensive landed property (especially in the country) retained by the owner for his own use | Synonyms: acres, demesne, land, landed estate |
| (noun) everything you own; all of your assets (whether real property or personal property) and liabilities | - |
| estazolam | (noun) a frequently prescribed sleeping pill (trade name ProSom) | Synonyms: ProSom |
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| eta | (noun) the 7th letter of the Greek alphabet | - |
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| etagere | (noun) a piece of furniture with open shelves for displaying small ornaments | - |
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| etamin | (noun) a soft cotton or worsted fabric with an open mesh; used for curtains or clothing etc. | Synonyms: etamine |
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| etamine | (noun) a soft cotton or worsted fabric with an open mesh; used for curtains or clothing etc. | Synonyms: etamin |
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| etanercept | (noun) a genetically engineered anti-TNF compound (trade name Enbrel) consisting of receptors that bind TNF; it is injected twice a week in the treatment of rheumatoid arthritis | Synonyms: Enbrel |
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| exacta | (noun) a bet that you can pick the first and second finishers in the right order | Synonyms: perfecta |
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| exaltation | (noun) the elevation of a person (as to the status of a god) | Synonyms: apotheosis, deification |
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| (noun) a flock of larks (especially a flock of larks in flight overhead) | - |
| (noun) the location of a planet in the zodiac at which it is believed to exert its maximum influence | - |
| (noun) a state of being carried away by overwhelming emotion | Synonyms: ecstasy, rapture, raptus, transport |
| excitability | (noun) being easily excited | Synonyms: excitableness, volatility |
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| (noun) excessive sensitivity of an organ or body part | Synonyms: irritability |
| excitableness | (noun) being easily excited | Synonyms: excitability, volatility |
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| excitant | (noun) a drug that temporarily quickens some vital process | Synonyms: stimulant, stimulant drug |
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| excitation | (noun) something that agitates and arouses | Synonyms: excitement |
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| (noun) the neural or electrical arousal of an organ or muscle or gland | Synonyms: innervation, irritation |
| (noun) the state of being emotionally aroused and worked up | Synonyms: excitement, fervor, fervour, inflammation |
| excogitation | (noun) thinking something out with care in order to achieve complete understanding of it | - |
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| (noun) the creation of something in the mind | Synonyms: conception, design, innovation, invention |
| excogitator | (noun) a thinker who considers carefully and thoroughly | - |
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| excreta | (noun) waste matter (as urine or sweat but especially feces) discharged from the body | Synonyms: body waste, excrement, excretion, excretory product |
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| executability | (noun) capability of being executed | - |
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| executant | (noun) a performer (usually of musical works) | - |
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| exhortation | (noun) the act of exhorting; an earnest attempt at persuasion | Synonyms: incitement |
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| (noun) a communication intended to urge or persuade the recipients to take some action | - |
| exorbitance | (noun) excessive excess | Synonyms: outrageousness |
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| expectancy | (noun) something expected (as on the basis of a norm) | Synonyms: anticipation |
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| (noun) an expectation | Synonyms: anticipation |
| expectation | (noun) belief about (or mental picture of) the future | Synonyms: outlook, prospect |
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| (noun) the sum of the values of a random variable divided by the number of values | Synonyms: arithmetic mean, expected value, first moment |
| (noun) the feeling that something is about to happen | - |
| (noun) anticipating with confidence of fulfillment | Synonyms: anticipation |
| experimentalism | (noun) an orientation that favors experimentation and innovation | - |
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| (noun) an empirical doctrine that advocates experimental principles | - |
| experimentation | (noun) the act of conducting a controlled test or investigation | Synonyms: experiment |
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| (noun) the testing of an idea | Synonyms: experiment |
| exploitation | (noun) the act of making some area of land or water more profitable or productive or useful | Synonyms: development |
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| (noun) an act that exploits or victimizes someone (treats them unfairly) | Synonyms: using, victimisation, victimization |
| exportation | (noun) the commercial activity of selling and shipping goods to a foreign country | Synonyms: exporting |
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| (noun) commodities (goods or services) sold to a foreign country | Synonyms: export |
| extractant | (noun) an immiscible liquid used to extract a substance from another liquid. | - |
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| exultation | (noun) the utterance of sounds expressing great joy | Synonyms: jubilation, rejoicing |
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| (noun) a feeling of extreme joy | Synonyms: jubilance, jubilancy, jubilation |
| facilitation | (noun) act of assisting or making easier the progress or improvement of something | - |
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| (noun) (neurophysiology) phenomenon that occurs when two or more neural impulses that alone are not enough to trigger a response in a neuron combine to trigger an action potential | - |
| (noun) the condition of being made easy (or easier) | - |
| facilitator | (noun) someone who makes progress easier | - |
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| fairytale | (noun) a story about fairies; told to amuse children | Synonyms: fairy story, fairy tale |
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| (noun) an interesting but highly implausible story; often told as an excuse | Synonyms: cock-and-bull story, fairy story, fairy tale, song and dance |
| fantail | (noun) an overhang consisting of the fan-shaped part of the deck extending aft of the sternpost of a ship | - |
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| fantan | (noun) a Chinese gambling game; a random number of counters are placed under a bowl and you gamble on how many will be left (0, 1, 2, or 3 modulo 4) | Synonyms: fan tan |
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| (noun) a card game in which you play your sevens and other cards in sequence in the same suit as the sevens; you win if you are the first to use all your cards | Synonyms: parliament, sevens |
| fantasia | (noun) a musical composition of a free form usually incorporating several familiar themes | - |
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| fantasist | (noun) a creator of fantasies | - |
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| fantasm | (noun) something existing in perception only | Synonyms: apparition, phantasm, phantasma, phantom, shadow |
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| (noun) a ghostly appearing figure | Synonyms: apparition, phantasm, phantasma, phantom, specter, spectre |
| fantast | (noun) someone who predicts the future | Synonyms: futurist |
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| fantasticalness | (noun) The state or condition of pertaining to fantasy; of being fanciful or whimsical. | - |
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| fantasy | (noun) imagination unrestricted by reality | Synonyms: phantasy |
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| (noun) something many people believe that is false | Synonyms: fancy, illusion, phantasy |
| (noun) fiction with a large amount of imagination in it | Synonyms: phantasy |
| fascista | (noun) an Italian fascist under Mussolini | - |
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| fatalism | (noun) a philosophical doctrine holding that all events are predetermined in advance for all time and human beings are powerless to change them | - |
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| (noun) a submissive mental attitude resulting from acceptance of the doctrine that everything that happens is predetermined and inevitable | - |
| fatalist | (noun) anyone who submits to the belief that they are powerless to change their destiny | Synonyms: determinist, predestinarian, predestinationist |
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| fatality | (noun) the quality of being able to cause death or fatal disasters | - |
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| (noun) a death resulting from an accident or a disaster | Synonyms: human death |
| federita | (noun) a Sudanese sorghum having exceptionally large soft white grains | Synonyms: feterita, Sorghum vulgare caudatum |
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| felicitation | (noun) the act of acknowledging that someone has an occasion for celebration | Synonyms: congratulation |
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| (noun) (usually plural) an expression of pleasure at the success or good fortune of another | Synonyms: congratulation |
| fermata | (noun) (music) a prolongation of unspecified length on a note or chord or rest | - |
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| (noun) a musical notation (over a note or chord or rest) that indicates it is to be prolonged by an unspecified amount | - |
| fermentation | (noun) a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol | Synonyms: ferment, fermenting, zymolysis, zymosis |
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| (noun) a state of agitation or turbulent change or development | Synonyms: agitation, ferment, tempestuousness, unrest |
| feterita | (noun) a Sudanese sorghum having exceptionally large soft white grains | Synonyms: federita, Sorghum vulgare caudatum |
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| fiesta | (noun) an elaborate party (often outdoors) | Synonyms: feast, fete |
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| fingerstall | (noun) a sheath worn to protect a finger | Synonyms: cot |
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| flagstaff | (noun) a tall staff or pole on which a flag is raised | Synonyms: flagpole |
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| flexitarianism | (noun) The practice of eating mainly vegetarian food, but making occasional exceptions for social, pragmatic, cultural, or nutritional reasons. | Synonyms: semi-vegetarianism |
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| flickertail | (noun) of sagebrush and grassland areas of western United States and Canada | Synonyms: Citellus richardsoni, Richardson ground squirrel |
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| flirtation | (noun) playful behavior intended to arouse sexual interest | Synonyms: coquetry, dalliance, flirt, flirting, toying |
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| floatation | (noun) financing a commercial enterprise by bond or stock shares | Synonyms: flotation |
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| (noun) the phenomenon of floating (remaining on the surface of a liquid without sinking) | Synonyms: flotation |
| flotation | (noun) financing a commercial enterprise by bond or stock shares | Synonyms: floatation |
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| (noun) the phenomenon of floating (remaining on the surface of a liquid without sinking) | Synonyms: floatation |
| fluvastatin | (noun) least expensive statin drug (trade name Lescol); usually taken orally at bedtime | Synonyms: Lescol |
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| folktale | (noun) a tale circulated by word of mouth among the common folk | Synonyms: folk tale |
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| fomentation | (noun) deliberate and intentional triggering (of trouble or discord) | Synonyms: instigation |
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| (noun) application of warm wet coverings to a part of the body to relieve pain and inflammation | - |
| (noun) a substance used as a warm moist medicinal compress or poultice | - |
| fontanel | (noun) any membranous gap between the bones of the cranium in an infant or fetus | Synonyms: fontanelle, soft spot |
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| fontanelle | (noun) any membranous gap between the bones of the cranium in an infant or fetus | Synonyms: fontanel, soft spot |
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| footage | (noun) film that has been shot | - |
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| (noun) a rate of charging by the linear foot of work done | - |
| footstall | (noun) an architectural support or base (as for a column or statue) | Synonyms: pedestal, plinth |
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| forestage | (noun) the part of a modern theater stage between the curtain and the orchestra (i.e., in front of the curtain) | Synonyms: apron, proscenium |
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| forestalling | (noun) the act of preventing something by anticipating and disposing of it effectively | Synonyms: obviation, preclusion |
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| forestay | (noun) an adjustable stay from the foremast to the deck or bowsprit; controls the bending of the mast | - |
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| foretaste | (noun) an early limited awareness of something yet to occur | - |
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| fountain | (noun) a plumbing fixture that provides a flow of water | Synonyms: fount |
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| (noun) an artificially produced flow of water | Synonyms: jet |
| (noun) a structure from which an artificially produced jet of water arises | - |
| (noun) a natural flow of ground water | Synonyms: natural spring, outflow, outpouring, spring |
| fountainhead | (noun) an abundant source | Synonyms: well, wellspring |
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| (noun) the source of water from which a stream arises | Synonyms: head, headspring |
| foxtail | (noun) grasses of the genera Alopecurus and Setaria having dense silky or bristly brushlike flowering spikes | Synonyms: foxtail grass |
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| fractal | (noun) (mathematics) a geometric pattern that is repeated at every scale and so cannot be represented by classical geometry | - |
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| fragmentation | (noun) separating something into fine particles | Synonyms: atomisation, atomization |
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| (noun) the scattering of bomb fragments after the bomb explodes | - |
| (noun) (computer science) the condition of a file that is broken up and stored in many different locations on a magnetic disk | - |
| (noun) the disintegration of social norms governing behavior and thought and social relationships | - |
| freetail | (noun) small swift insectivorous bat with leathery ears and a long tail; common in warm regions | Synonyms: free-tailed bat, freetailed bat |
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| freightage | (noun) transporting goods commercially at rates cheaper than express rates | Synonyms: freight |
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| (noun) the charge for transporting something by common carrier | Synonyms: freight, freight rate |
| frequentative | (noun) a verb form that serves to express frequent repetition of an action | - |
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| frittata | (noun) Italian omelet with diced vegetables and meats; cooked until bottom is set then inverted into another pan to cook the top | - |
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| frontage | (noun) the face or front of a building | Synonyms: facade, frontal |
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| (noun) the extent of land abutting on a street or water | - |
| (noun) the direction in which something (such as a building) faces | - |
| frontal | (noun) an adornment worn on the forehead | Synonyms: frontlet |
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| (noun) a drapery that covers the front of an altar | - |
| (noun) the face or front of a building | Synonyms: facade, frontage |
| frontstall | (noun) medieval plate armor to protect a horse's head | Synonyms: chamfron, chanfron, front-stall, testiere |
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| frottage | (noun) masturbation by rubbing against another person (as in a crowd) | - |
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