| ignorantness | (noun) ignorance (especially of orthodox beliefs) | Synonyms: nescience, unknowing, unknowingness |
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| iguana | (noun) large herbivorous tropical American arboreal lizards with a spiny crest along the back; used as human food in Central America and South America | Synonyms: common iguana, Iguana iguana |
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| iguanid | (noun) lizards of the New World and Madagascar and some Pacific islands; typically having a long tail and bright throat patch in males | Synonyms: iguanid lizard |
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| iguanodon | (noun) massive herbivorous bipedal dinosaur with a long heavy tail; common in Europe and northern Africa; early Cretaceous period | - |
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| ijtihad | (noun) the endeavor of a Muslim scholar to derive a rule of divine law from the Koran and Hadith without relying on the views of other scholars; by the end of the 10th century theologians decided that debate on such matters would be closed and Muslim theology and law were frozen | - |
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| ikon | (noun) a visual representation (of an object or scene or person or abstraction) produced on a surface | Synonyms: icon, image, picture |
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| (noun) a conventional religious painting in oil on a small wooden panel; venerated in the Eastern Church | Synonyms: icon |
| ilama | (noun) whitish tropical fruit with a pinkish tinge related to custard apples; grown in the southern United States | - |
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| (noun) tropical American tree grown in southern United States having a whitish pink-tinged fruit | Synonyms: Annona diversifolia, ilama tree |
| ileitis | (noun) inflammation of the ileum | - |
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| ileostomy | (noun) surgical procedure that creates an opening from the ileum through the abdominal wall to function as an anus; performed in cases of cancer of the colon or ulcerative colitis | - |
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| ileum | (noun) the part of the small intestine between the jejunum and the cecum | - |
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| ileus | (noun) blockage of the intestine (especially the ileum) that prevents the contents of the intestine from passing to the lower bowel | Synonyms: intestinal obstruction |
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| ilium | (noun) the upper and widest of the three bones making up the hipbone | - |
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| ilk | (noun) a kind of person | Synonyms: like |
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| ill | (noun) an often persistent bodily disorder or disease; a cause for complaining | Synonyms: ailment, complaint |
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| illation | (noun) the reasoning involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observation | Synonyms: inference |
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| illegality | (noun) unlawfulness by virtue of violating some legal statute | - |
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| illegibility | (noun) the quality of writing (print or handwriting) that cannot be deciphered | - |
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| illegitimacy | (noun) unlawfulness by virtue of not being authorized by or in accordance with law | - |
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| (noun) the status of being born to parents who were not married | Synonyms: bar sinister, bastardy |
| illegitimate | (noun) the illegitimate offspring of unmarried parents | Synonyms: bastard, by-blow, illegitimate child, love child, whoreson |
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| illiberality | (noun) a disposition not to be liberal (generous) with money | - |
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| illicitness | (noun) the quality of not conforming strictly to law | - |
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| illiquidity | (noun) the quality of being illiquid; a lack of liquidity; difficulty in selling out an asset. | - |
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| illiteracy | (noun) an inability to read | Synonyms: analphabetism |
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| (noun) ignorance resulting from not reading | - |
| illiterate | (noun) a person unable to read | Synonyms: illiterate person, nonreader |
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| illness | (noun) impairment of normal physiological function affecting part or all of an organism | Synonyms: malady, sickness, unwellness |
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| illogic | (noun) invalid or incorrect reasoning | Synonyms: illogicality, illogicalness, inconsequence |
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| illogicality | (noun) invalid or incorrect reasoning | Synonyms: illogic, illogicalness, inconsequence |
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| illogicalness | (noun) invalid or incorrect reasoning | Synonyms: illogic, illogicality, inconsequence |
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| illuminance | (noun) the luminous flux incident on a unit area | Synonyms: illumination |
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| illuminant | (noun) something that can serve as a source of light | - |
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| illumination | (noun) painting or drawing included in a book (especially in illuminated medieval manuscripts) | Synonyms: miniature |
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| (noun) the luminous flux incident on a unit area | Synonyms: illuminance |
| (noun) an interpretation that removes obstacles to understanding | Synonyms: clarification, elucidation |
| (noun) the degree of visibility of your environment | - |
| (noun) a condition of spiritual awareness; divine illumination | Synonyms: light |
| illusion | (noun) the act of deluding; deception by creating illusory ideas | Synonyms: delusion, head game |
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| (noun) an illusory feat; considered magical by naive observers | Synonyms: conjuration, conjuring trick, deception, legerdemain, magic, magic trick, thaumaturgy, trick |
| (noun) something many people believe that is false | Synonyms: fancy, fantasy, phantasy |
| (noun) an erroneous mental representation | Synonyms: semblance |
| illusionist | (noun) a person with unusual powers of foresight | Synonyms: seer, visionary |
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| (noun) someone who performs magic tricks to amuse an audience | Synonyms: conjurer, conjuror, magician, prestidigitator |
| illusoriness | (noun) The quality of resulting from an illusion; of being deceptive, imaginary, unreal. | - |
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| illustration | (noun) a visual representation (a picture or diagram) that is used to make some subject more pleasing or easier to understand | - |
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| (noun) an item of information that is typical of a class or group | Synonyms: example, instance, representative |
| (noun) artwork that helps make something clear or attractive | - |
| (noun) showing by example | Synonyms: exemplification |
| illustrator | (noun) an artist who makes illustrations (for books or magazines or advertisements etc.) | - |
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| illustriousness | (noun) the property possessed by something or someone of outstanding importance or eminence | Synonyms: greatness |
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| ilmenite | (noun) a weakly magnetic black mineral found in metamorphic and plutonic rocks; an iron titanium oxide in crystalline form; a source of titanium | - |
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| image | (noun) a visual representation (of an object or scene or person or abstraction) produced on a surface | Synonyms: icon, ikon, picture |
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| (noun) a representation of a person (especially in the form of sculpture) | Synonyms: effigy, simulacrum |
| (noun) (Jungian psychology) a personal facade that one presents to the world | Synonyms: persona |
| (noun) the general impression that something (a person or organization or product) presents to the public | - |
| (noun) an iconic mental representation | Synonyms: mental image |
| (noun) a standard or typical example | Synonyms: epitome, paradigm, prototype |
| (noun) language used in a figurative or nonliteral sense | Synonyms: figure, figure of speech, trope |
| (noun) (mathematics) the set of values of the dependent variable for which a function is defined | Synonyms: range, range of a function |
| (noun) someone who closely resembles a famous person (especially an actor) | Synonyms: double, look-alike |
| imagery | (noun) the ability to form mental images of things or events | Synonyms: imagination, imaging, mental imagery |
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| imaginary | (noun) (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1 | Synonyms: complex number, complex quantity, imaginary number |
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| imagination | (noun) the formation of a mental image of something that is not perceived as real and is not present to the senses | Synonyms: imaginativeness, vision |
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| (noun) the ability to form mental images of things or events | Synonyms: imagery, imaging, mental imagery |
| (noun) the ability to deal resourcefully with unusual problems | Synonyms: resource, resourcefulness |
| imaginativeness | (noun) the formation of a mental image of something that is not perceived as real and is not present to the senses | Synonyms: imagination, vision |
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| imaging | (noun) (medicine) obtaining pictures of the interior of the body | Synonyms: tomography |
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| (noun) the ability to form mental images of things or events | Synonyms: imagery, imagination, mental imagery |
| imagism | (noun) a movement by American and English poets early in the 20th century in reaction to Victorian sentimentality; used common speech in free verse with clear concrete imagery | - |
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| imago | (noun) an adult insect produced after metamorphosis | - |
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| (noun) (psychoanalysis) an idealized image of someone (usually a parent) formed in childhood | - |
| imam | (noun) (Islam) the man who leads prayers in a mosque; for Shiites an imam is a recognized authority on Islamic theology and law and a spiritual guide | Synonyms: imaum |
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| imaret | (noun) a hostel for pilgrims in Turkey | - |
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| imaum | (noun) (Islam) the man who leads prayers in a mosque; for Shiites an imam is a recognized authority on Islamic theology and law and a spiritual guide | Synonyms: imam |
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| imbalance | (noun) lack of proportion; imbalance among the parts of something | Synonyms: disproportion, dissymmetry |
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| (noun) a lack of balance or state of disequilibrium | Synonyms: instability, unbalance |
| imbauba | (noun) tropical American tree with large peltate leaves and hollow stems | Synonyms: Cecropia peltata, snake wood, trumpet-wood, trumpet tree, trumpetwood |
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| imbecile | (noun) a person of subnormal intelligence | Synonyms: changeling, cretin, half-wit, idiot, moron, retard |
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| imbecility | (noun) a stupid mistake | Synonyms: betise, folly, foolishness, stupidity |
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| (noun) retardation more severe than a moron but not as severe as an idiot | - |
| imbiber | (noun) a person who drinks alcoholic beverages (especially to excess) | Synonyms: drinker, juicer, toper |
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| imbibing | (noun) the act of consuming liquids | Synonyms: drinking, imbibition |
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| imbibition | (noun) the act of consuming liquids | Synonyms: drinking, imbibing |
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| (noun) (chemistry) the absorption of a liquid by a solid or gel | - |
| imbrication | (noun) covering with a design in which one element covers a part of another (as with tiles or shingles) | Synonyms: lapping, overlapping |
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| imbroglio | (noun) a very embarrassing misunderstanding | - |
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| (noun) an intricate and confusing interpersonal or political situation | Synonyms: embroilment |
| imidazole | (noun) an organic base C3H4N2; a histamine inhibitor | Synonyms: glyoxaline, iminazole |
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| imide | (noun) any of a class of organic compounds that contain the divalent radical -CONHCO- | - |
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| iminazole | (noun) an organic base C3H4N2; a histamine inhibitor | Synonyms: glyoxaline, imidazole |
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| imipramine | (noun) a tricyclic antidepressant (trade names Imavate and Tofranil) used to treat clinical depression | Synonyms: Imavate, impramine hydrochloride, Tofranil |
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| imitation | (noun) copying (or trying to copy) the actions of someone else | - |
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| (noun) something copied or derived from an original | - |
| (noun) the doctrine that representations of nature or human behavior should be accurate imitations | - |
| (noun) a representation of a person that is exaggerated for comic effect | Synonyms: caricature, impersonation |
| imitativeness | (noun) the state of being imitating, copying, or unoriginal. | - |
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| imitator | (noun) someone who copies the words or behavior of another | Synonyms: ape, aper, copycat, emulator |
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| (noun) someone who (fraudulently) assumes the appearance of another | Synonyms: impersonator |
| immaculacy | (noun) The characteristic of having no stain or blemish; of being spotless, undefiled, clear, pure. | - |
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| immaculateness | (noun) the state of being spotlessly clean | Synonyms: spotlessness |
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| immanence | (noun) the state of being within or not going beyond a given domain | Synonyms: immanency |
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| immanency | (noun) the state of being within or not going beyond a given domain | Synonyms: immanence |
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| immateriality | (noun) the quality of not being physical; not consisting of matter | Synonyms: incorporeality |
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| (noun) complete irrelevance requiring no further consideration | - |
| immatureness | (noun) not having reached maturity | Synonyms: immaturity |
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| immaturity | (noun) not having reached maturity | Synonyms: immatureness |
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| immeasurability | (noun) the quality of being immeasurable. | - |
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| immediacy | (noun) the quickness of action or occurrence | Synonyms: immediateness, instancy, instantaneousness |
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| (noun) lack of an intervening or mediating agency | Synonyms: immediateness |
| (noun) immediate intuitive awareness | Synonyms: immediate apprehension |
| immediateness | (noun) the quickness of action or occurrence | Synonyms: immediacy, instancy, instantaneousness |
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| (noun) lack of an intervening or mediating agency | Synonyms: immediacy |
| immenseness | (noun) unusual largeness in size or extent or number | Synonyms: enormousness, grandness, greatness, immensity, sizeableness, vastness, wideness |
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| immensity | (noun) unusual largeness in size or extent or number | Synonyms: enormousness, grandness, greatness, immenseness, sizeableness, vastness, wideness |
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| immersion | (noun) a form of baptism in which part or all of a person's body is submerged | - |
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| (noun) the act of wetting something by submerging it | Synonyms: dousing, ducking, submersion |
| (noun) complete attention; intense mental effort | Synonyms: absorption, concentration, engrossment |
| (noun) sinking until covered completely with water | Synonyms: submergence, submerging, submersion |
| (noun) (astronomy) the disappearance of a celestial body prior to an eclipse | Synonyms: ingress |
| immigrant | (noun) a person who comes to a country where they were not born in order to settle there | - |
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| immigration | (noun) migration into a place (especially migration to a country of which you are not a native in order to settle there) | Synonyms: in-migration |
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| (noun) the body of immigrants arriving during a specified interval | - |
| imminence | (noun) the state of being imminent and liable to happen soon | Synonyms: forthcomingness, imminency, imminentness, impendence, impendency |
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| imminency | (noun) the state of being imminent and liable to happen soon | Synonyms: forthcomingness, imminence, imminentness, impendence, impendency |
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| imminentness | (noun) the state of being imminent and liable to happen soon | Synonyms: forthcomingness, imminence, imminency, impendence, impendency |
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| immobilisation | (noun) the act of limiting movement or making incapable of movement | Synonyms: immobilization, immobilizing |
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| (noun) fixation (as by a plaster cast) of a body part in order to promote proper healing | Synonyms: immobilization |
| immobility | (noun) the quality of not moving | - |
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| (noun) remaining in place | Synonyms: fixedness, stationariness |
| immobilization | (noun) the act of limiting movement or making incapable of movement | Synonyms: immobilisation, immobilizing |
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| (noun) fixation (as by a plaster cast) of a body part in order to promote proper healing | Synonyms: immobilisation |
| immobilizing | (noun) the act of limiting movement or making incapable of movement | Synonyms: immobilisation, immobilization |
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| immoderateness | (noun) the quality of being excessive and lacking in moderation | Synonyms: immoderation |
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| immoderation | (noun) the quality of being excessive and lacking in moderation | Synonyms: immoderateness |
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| immodesty | (noun) the perverse act of exposing and attracting attention to your own genitals | Synonyms: exhibitionism |
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| (noun) the trait of being vain and conceited | - |
| immolation | (noun) killing or offering as a sacrifice | - |
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| immorality | (noun) morally objectionable behavior | Synonyms: evil, iniquity, wickedness |
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| (noun) the quality of not being in accord with standards of right or good conduct | - |
| immortal | (noun) any supernatural being worshipped as controlling some part of the world or some aspect of life or who is the personification of a force | Synonyms: deity, divinity, god |
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| (noun) a person (such as an author) of enduring fame | - |
| immortality | (noun) the quality or state of being immortal | - |
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| (noun) perpetual life after death | - |
| immortelle | (noun) mostly widely cultivated species of everlasting flowers having usually purple flowers; southern Europe to Iran; naturalized elsewhere | Synonyms: Xeranthemum annuum |
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| immotility | (noun) lacking an ability to move | - |
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| immovability | (noun) not capable of being moved or rearranged | Synonyms: immovableness |
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| immovable | (noun) property consisting of houses and land | Synonyms: real estate, real property, realty |
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| immovableness | (noun) not capable of being moved or rearranged | Synonyms: immovability |
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| immune | (noun) a person who is immune to a particular infection | - |
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