| agitation | (noun) disturbance usually in protest | Synonyms: excitement, hullabaloo, turmoil, upheaval |
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| (noun) the act of agitating something; causing it to move around (usually vigorously) | - |
| (noun) the feeling of being agitated; not calm | - |
| (noun) a state of agitation or turbulent change or development | Synonyms: ferment, fermentation, tempestuousness, unrest |
| (noun) a mental state of extreme emotional disturbance | - |
| agnail | (noun) a loose narrow strip of skin near the base of a fingernail; tearing it produces a painful sore that is easily infected | Synonyms: hangnail |
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| agnate | (noun) one related on the father's side | Synonyms: patrikin, patrilineal kin, patrilineal sib, patrisib |
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| agnathan | (noun) eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms | Synonyms: jawless fish, jawless vertebrate |
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| agnation | (noun) line of descent traced through the paternal side of the family | Synonyms: patrilineage |
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| agnomen | (noun) an additional name or an epithet appended to a name (as in `Ferdinand the Great') | - |
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| agnosia | (noun) inability to recognize objects by use of the senses | - |
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| agnostic | (noun) a person who claims that they cannot have true knowledge about the existence of God (but does not deny that God might exist) | - |
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| (noun) someone who is doubtful or noncommittal about something | Synonyms: doubter |
| agnosticism | (noun) the disbelief in any claims of ultimate knowledge | Synonyms: scepticism, skepticism |
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| (noun) a religious orientation of doubt; a denial of ultimate knowledge of the existence of God | - |
| agon | (noun) a festivity in ancient Greece at which competitors contended for prizes | - |
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| agonist | (noun) (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction | - |
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| (noun) a muscle that contracts while another relaxes | - |
| (noun) someone involved in a contest or battle (as in an agon) | - |
| (noun) the principal character in a work of fiction | Synonyms: protagonist |
| agony | (noun) intense feelings of suffering; acute mental or physical pain | Synonyms: torment, torture |
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| (noun) a state of acute pain | Synonyms: excruciation, suffering |
| agranulocytosis | (noun) an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes | Synonyms: agranulosis, granulocytopenia |
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| agranulosis | (noun) an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes | Synonyms: agranulocytosis, granulocytopenia |
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| agraphon | (noun) (usually plural) a saying of Jesus not in the canonical gospels but found in other New Testament or early Christian writings. | - |
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| agreeableness | (noun) a temperamental disposition to be agreeable | Synonyms: agreeability |
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| (noun) pleasantness resulting from agreeable conditions | Synonyms: amenity |
| agreement | (noun) compatibility of observations | Synonyms: correspondence |
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| (noun) the thing arranged or agreed to | Synonyms: arrangement |
| (noun) the verbal act of agreeing | - |
| (noun) the statement (oral or written) of an exchange of promises | Synonyms: understanding |
| (noun) the determination of grammatical inflection on the basis of word relations | Synonyms: concord |
| (noun) harmony of people's opinions or actions or characters | Synonyms: accord |
| agribusiness | (noun) a large-scale farming enterprise | Synonyms: agriculture, factory farm |
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| agrimonia | (noun) a plant of the genus Agrimonia having spikelike clusters of small yellow flowers | Synonyms: agrimony |
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| agrimony | (noun) a plant of the genus Agrimonia having spikelike clusters of small yellow flowers | Synonyms: agrimonia |
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| agromania | (noun) an intense desire to be alone or out in the open | - |
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| agronomist | (noun) an expert in soil management and field-crop production | - |
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| agronomy | (noun) the application of soil and plant sciences to land management and crop production | Synonyms: scientific agriculture |
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| agrypnia | (noun) a vigil before certain feasts (as e.g. Easter) | - |
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| ailanthus | (noun) any of several deciduous Asian trees of the genus Ailanthus | - |
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| aileron | (noun) an airfoil that controls lateral motion | - |
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| ailment | (noun) an often persistent bodily disorder or disease; a cause for complaining | Synonyms: complaint, ill |
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| aimlessness | (noun) the quality of lacking any definite purpose | Synonyms: purposelessness |
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| aircraftman | (noun) a noncommissioned officer in the British Royal Air Force | Synonyms: aircraftsman |
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| aircraftsman | (noun) a noncommissioned officer in the British Royal Air Force | Synonyms: aircraftman |
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| aircrewman | (noun) a member of an aircrew | - |
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| airgun | (noun) a gun that propels a projectile by compressed air | Synonyms: air gun, air rifle |
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| airiness | (noun) the property of something weightless and insubstantial | Synonyms: buoyancy |
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| (noun) the property of something spacious and abounding in fresh air | - |
| (noun) lightness in movement or manner | Synonyms: delicacy |
| airing | (noun) the act of supplying fresh air and getting rid of foul air | Synonyms: ventilation |
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| (noun) a short excursion (a walk or ride) in the open air | - |
| (noun) the opening of a subject to widespread discussion and debate | Synonyms: dissemination, public exposure, spreading |
| airline | (noun) a commercial enterprise that provides scheduled flights for passengers | Synonyms: airline business, airway |
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| (noun) a hose that carries air under pressure | Synonyms: air hose |
| airliner | (noun) a commercial airplane that carries passengers | - |
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| airman | (noun) a male who operates an aircraft | - |
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| airmanship | (noun) the art of operating aircraft | Synonyms: aviation |
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| airplane | (noun) an aircraft that has a fixed wing and is powered by propellers or jets | Synonyms: aeroplane, plane |
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| airsickness | (noun) motion sickness experienced while traveling by air (especially during turbulence) | Synonyms: air sickness |
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| airwoman | (noun) a woman aviator | Synonyms: aviatress, aviatrix |
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| airworthiness | (noun) fitness to fly | - |
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| aitchbone | (noun) a cut of beef including the H-shaped rump bone | - |
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| akinesia | (noun) motionlessness attributable to a temporary paralysis | Synonyms: akinesis |
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| akinesis | (noun) motionlessness attributable to a temporary paralysis | Synonyms: akinesia |
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| alanine | (noun) a crystalline amino acid that occurs in many proteins | - |
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| albinism | (noun) the congenital absence of pigmentation in the eyes and skin and hair | - |
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| albino | (noun) an animal with congenital albinism | - |
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| (noun) a person with congenital albinism: white hair and milky skin; eyes are usually pink | - |
| albuginea | (noun) whitish tunic | - |
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| albumen | (noun) the white part of an egg; the nutritive and protective gelatinous substance surrounding the yolk consisting mainly of albumin dissolved in water | Synonyms: egg white, ovalbumin, white |
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| (noun) a simple water-soluble protein found in many animal tissues and liquids | Synonyms: albumin |
| albumin | (noun) a simple water-soluble protein found in many animal tissues and liquids | Synonyms: albumen |
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| albuminoid | (noun) a simple protein found in horny and cartilaginous tissues and in the lens of the eye | Synonyms: scleroprotein |
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| albuminuria | (noun) the presence of excessive protein (chiefly albumin but also globulin) in the urine; usually a symptom of kidney disorder | Synonyms: proteinuria |
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| alcapton | (noun) an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine | Synonyms: alkapton, homogentisic acid |
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| alcaptonuria | (noun) a rare recessive metabolic anomaly marked by ochronosis and the presence of alkapton in the urine | Synonyms: alkaptonuria |
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| alderman | (noun) a member of a municipal legislative body (as a city council) | - |
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| aldosterone | (noun) a corticosteroid hormone that is secreted by the cortex of the adrenal gland; regulates salt (sodium and potassium) and water balance | - |
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| aldosteronism | (noun) a condition caused by overproduction of aldosterone | Synonyms: hyperaldosteronism |
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| alendronate | (noun) a tablet (trade name Fosamax) prescribed to prevent or treat osteoporosis in women after menopause | Synonyms: Fosamax |
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| alerting | (noun) a warning serves to make you more alert to danger | Synonyms: alert |
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| (noun) a state of readiness to respond | Synonyms: alertness |
| alertness | (noun) lively attentiveness | Synonyms: on the qui vive, sharp-sightedness |
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| (noun) the process of paying close and continuous attention | Synonyms: vigilance, wakefulness, watchfulness |
| (noun) a state of readiness to respond | Synonyms: alerting |
| aleurone | (noun) granular protein in outermost layer of endosperm of many seeds or cereal grains | - |
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| alexandrite | (noun) a green variety of chrysoberyl used as a gemstone | - |
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| algin | (noun) a gum used especially as a thickener or emulsifier | Synonyms: alginic acid |
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| algolagnia | (noun) sexual pleasure derived from inflicting or experiencing pain | Synonyms: algophilia |
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| alien | (noun) a person who comes from a foreign country; someone who does not owe allegiance to your country | Synonyms: foreigner, noncitizen, outlander |
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| (noun) anyone who does not belong in the environment in which they are found | Synonyms: stranger, unknown |
| (noun) a form of life assumed to exist outside the Earth or its atmosphere | Synonyms: extraterrestrial, extraterrestrial being |
| alienage | (noun) the quality of being alien | Synonyms: alienism |
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| alienation | (noun) the action of alienating; the action of causing to become unfriendly | - |
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| (noun) (law) the voluntary and absolute transfer of title and possession of real property from one person to another | - |
| (noun) the feeling of being alienated from other people | Synonyms: disaffection, estrangement |
| (noun) separation resulting from hostility | Synonyms: estrangement |
| alienator | (noun) an unpleasant person who causes friendly people to become indifferent or unfriendly or hostile | - |
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| alienee | (noun) someone to whom the title of property is transferred | Synonyms: grantee |
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| alienism | (noun) the quality of being alien | Synonyms: alienage |
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| (noun) an obsolete term for the study and treatment of mental illness | - |
| alienist | (noun) a psychiatrist and specialist in the legal aspects of mental illness | - |
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| alienor | (noun) someone from whom the title of property is transferred | - |
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| alignment | (noun) the act of adjusting or aligning the parts of a device in relation to each other | - |
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| (noun) the spatial property possessed by an arrangement or position of things in a straight line or in parallel lines | - |
| (noun) (astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac | Synonyms: conjunction |
| (noun) an organization of people (or countries) involved in a pact or treaty | Synonyms: alinement, alliance, coalition |
| alikeness | (noun) similarity in appearance or character or nature between persons or things | Synonyms: likeness, similitude |
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| aliment | (noun) a source of materials to nourish the body | Synonyms: alimentation, nourishment, nutriment, nutrition, sustenance, victuals |
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| alimentation | (noun) the act of supplying food and nourishment | Synonyms: feeding |
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| (noun) a source of materials to nourish the body | Synonyms: aliment, nourishment, nutriment, nutrition, sustenance, victuals |
| alimony | (noun) court-ordered support paid by one spouse to another after they are separated | Synonyms: maintenance |
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| alinement | (noun) an organization of people (or countries) involved in a pact or treaty | Synonyms: alignment, alliance, coalition |
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| aliquant | (noun) an integer that is not an exact divisor of some quantity | Synonyms: aliquant part |
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| aliveness | (noun) the property of being animated; having animal life as distinguished from plant life | Synonyms: animateness, liveness |
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| (noun) the condition of living or the state of being alive | Synonyms: animation, life, living |
| alizarin | (noun) an orange-red crystalline compound used in making red pigments and in dyeing | Synonyms: alizarine |
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| alizarine | (noun) an orange-red crystalline compound used in making red pigments and in dyeing | Synonyms: alizarin |
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| alkalinity | (noun) pH values above 7 | - |
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| alkalinuria | (noun) a condition in which the urine (which is normally slightly acidic) is alkaline | Synonyms: alkaluria |
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| alkane | (noun) a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2) | Synonyms: alkane series, methane series, paraffin, paraffin series |
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| alkanet | (noun) perennial or biennial herb cultivated for its delicate usually blue flowers | Synonyms: Anchusa officinalis, bugloss |
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| alkapton | (noun) an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine | Synonyms: alcapton, homogentisic acid |
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| alkaptonuria | (noun) a rare recessive metabolic anomaly marked by ochronosis and the presence of alkapton in the urine | Synonyms: alcaptonuria |
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| alkene | (noun) any unsaturated aliphatic hydrocarbon | Synonyms: olefin, olefine |
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| alkylbenzene | (noun) organic compound that has an alkyl group bound to a benzene ring | - |
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| alkylbenzenesulfonate | (noun) sulfonate of alkyl benzene | - |
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| alkyne | (noun) a colorless flammable gas used chiefly in welding and in organic synthesis | Synonyms: acetylene, ethyne |
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| allamanda | (noun) a plant of the genus Allamanda having large showy funnel-shaped flowers in terminal cymes | - |
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| allantois | (noun) the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals) | - |
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| allegation | (noun) (law) a formal accusation against somebody (often in a court of law) | - |
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| (noun) statements affirming or denying certain matters of fact that you are prepared to prove | Synonyms: allegement |
| allegement | (noun) statements affirming or denying certain matters of fact that you are prepared to prove | Synonyms: allegation |
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| allegiance | (noun) the act of binding yourself (intellectually or emotionally) to a course of action | Synonyms: commitment, dedication, loyalty |
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| (noun) the loyalty that citizens owe to their country (or subjects to their sovereign) | Synonyms: fealty |
| allegoricalness | (noun) The state or quality of being allegorical. | - |
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| allemande | (noun) egg-thickened veloute | Synonyms: allemande sauce |
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