| ad | (noun) a public promotion of some product or service | Synonyms: advert, advertisement, advertising, advertizement, advertizing |
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| adactylia | (noun) congenital absence of fingers and/or toes | Synonyms: adactylism, adactyly |
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| adactylism | (noun) congenital absence of fingers and/or toes | Synonyms: adactylia, adactyly |
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| adactylous | (adjective) without fingers and/or toes | - |
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| adactyly | (noun) congenital absence of fingers and/or toes | Synonyms: adactylia, adactylism |
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| adage | (noun) a condensed but memorable saying embodying some important fact of experience that is taken as true by many people | Synonyms: byword, proverb, saw |
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| adagio | (adjective) (of tempo) leisurely | - |
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| (noun) a slow section of a pas de deux requiring great skill and strength by the dancers | - |
| (noun) (music) a composition played in adagio tempo (slowly and gracefully) | - |
| (adverb) slowly | - |
| adamance | (noun) resoluteness by virtue of being unyielding and inflexible | Synonyms: obduracy, unyieldingness |
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| adamant | (adjective) impervious to pleas, persuasion, requests, reason | Synonyms: adamantine, inexorable, intransigent |
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| (noun) very hard native crystalline carbon valued as a gem | Synonyms: diamond |
| adamantine | (adjective) consisting of or having the hardness of adamant | - |
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| (adjective) having the hardness of a diamond | - |
| (adjective) impervious to pleas, persuasion, requests, reason | Synonyms: adamant, inexorable, intransigent |
| adamantly | (adverb) inflexibly; unshakably | - |
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| adapt | (verb) make fit for, or change to suit a new purpose | Synonyms: accommodate |
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| (verb) adapt or conform oneself to new or different conditions | Synonyms: adjust, conform |
| adaptability | (noun) the ability to change (or be changed) to fit changed circumstances | - |
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| adaptable | (adjective) capable of adapting (of becoming or being made suitable) to a particular situation or use | - |
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| adaptation | (noun) (physiology) the responsive adjustment of a sense organ (as the eye) to varying conditions (as of light) | - |
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| (noun) a written work (as a novel) that has been recast in a new form | Synonyms: version |
| (noun) the process of adapting to something (such as environmental conditions) | Synonyms: adaption, adjustment |
| adaptational | (adjective) of or relating to adaptation | - |
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| adaptative | (adjective) having a capacity for adaptation | Synonyms: adaptive |
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| adapted | (adjective) changed in order to improve or made more fit for a particular purpose | Synonyms: altered |
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| adapter | (noun) device that enables something to be used in a way different from that for which it was intended or makes different pieces of apparatus compatible | Synonyms: adaptor |
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| (noun) a musician who adapts a composition for particular voices or instruments or for another style of performance | Synonyms: arranger, transcriber |
| adaption | (noun) the process of adapting to something (such as environmental conditions) | Synonyms: adaptation, adjustment |
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| adaptive | (adjective) having a capacity for adaptation | Synonyms: adaptative |
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| adaptor | (noun) device that enables something to be used in a way different from that for which it was intended or makes different pieces of apparatus compatible | Synonyms: adapter |
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| adaxial | (adjective) nearest to or facing toward the axis of an organ or organism | Synonyms: ventral |
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| adaxially | (adverb) in an adaxial manner | - |
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| add | (verb) make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of | - |
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| (verb) make an addition by combining numbers | Synonyms: add together |
| (verb) determine the sum of | Synonyms: add together, add up, sum, sum up, summate, tally, tot, tot up, total, tote up |
| (verb) state or say further | Synonyms: append, supply |
| (verb) bestow a quality on | Synonyms: bestow, bring, contribute, impart, lend |
| (verb) constitute an addition | - |
| addable | (adjective) capable of being added or added to | Synonyms: addible |
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| addax | (noun) large antelope with lightly spiraled horns of desert regions of northern Africa | Synonyms: Addax nasomaculatus |
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| addend | (noun) a number that is added to another number (the augend) | - |
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| addendum | (noun) textual matter that is added onto a publication; usually at the end | Synonyms: postscript, supplement |
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| adder | (noun) small terrestrial viper common in northern Eurasia | Synonyms: common viper, Vipera berus |
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| (noun) a machine that adds numbers | - |
| (noun) a person who adds numbers | - |
| addible | (adjective) capable of being added or added to | Synonyms: addable |
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| addict | (noun) someone who is physiologically dependent on a substance or activity | - |
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| (noun) someone who is so ardently devoted to something that it resembles an addiction | Synonyms: freak, junkie, junky, nut |
| (verb) to cause (someone or oneself) to become dependent (on something, especially a narcotic drug) | Synonyms: hook |
| addicted | (adjective) compulsively or physiologically dependent on something habit-forming | - |
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| addiction | (noun) (Roman law) a formal award by a magistrate of a thing or person to another person (as the award of a debtor to his creditor); a surrender to a master | - |
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| (noun) an abnormally strong craving | - |
| (noun) being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs) | Synonyms: dependance, dependence, dependency, habituation |
| addictive | (adjective) causing or characterized by addiction | Synonyms: habit-forming |
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| addition | (noun) the arithmetic operation of summing; calculating the sum of two or more numbers | Synonyms: plus, summation |
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| (noun) the act of adding one thing to another | - |
| (noun) a component that is added to something to improve it | Synonyms: add-on, improver |
| (noun) a suburban area laid out in streets and lots for a future residential area | - |
| (noun) something added to what you already have | Synonyms: accession |
| (noun) a quantity that is added | Synonyms: gain, increase |
| additional | (adjective) further or added | Synonyms: extra |
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| additionally | (adverb) in addition, by way of addition; furthermore | Synonyms: to boot |
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| additive | (adjective) characterized or produced by addition | - |
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| (adjective) designating or involving an equation whose terms are of the first degree | Synonyms: linear |
| (noun) something added to enhance food or gasoline or paint or medicine | - |
| addle | (verb) become rotten | - |
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| (verb) mix up or confuse | Synonyms: muddle, puddle |
| addlebrained | (adjective) stupid and confused | Synonyms: addlepated, muddleheaded, puddingheaded |
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| addled | (adjective) confused and vague; used especially of thinking | Synonyms: befuddled, muddled, muzzy, woolly-headed, woolly, wooly-minded, wooly |
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| (adjective) (of eggs) no longer edible | - |
| addlehead | (noun) a person with confused ideas; incapable of serious thought | Synonyms: addle-head, birdbrain, loon |
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| addlepated | (adjective) stupid and confused | Synonyms: addlebrained, muddleheaded, puddingheaded |
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| address | (noun) the ability to do or say what is appropriate for the occasion | Synonyms: savoir-faire |
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| (noun) the stance assumed by a golfer in preparation for hitting a golf ball | - |
| (noun) the act of delivering a formal spoken communication to an audience | Synonyms: speech |
| (noun) a sign in front of a house or business carrying the conventional form by which its location is described | - |
| (noun) written directions for finding some location; written on letters or packages that are to be delivered to that location | Synonyms: destination, name and address |
| (noun) the manner of speaking to another individual | - |
| (noun) (computer science) the code that identifies where a piece of information is stored | Synonyms: computer address, reference |
| (noun) the place where a person or organization can be found or communicated with | - |
| (verb) adjust and aim (a golf ball) at in preparation of hitting | - |
| (verb) speak to | Synonyms: turn to |
| (verb) speak to someone | Synonyms: accost, come up to |
| (verb) give a speech to | Synonyms: speak |
| (verb) put an address on (an envelope) | Synonyms: direct |
| (verb) act on verbally or in some form of artistic expression | Synonyms: cover, deal, handle, plow, treat |
| (verb) direct a question at someone | - |
| (verb) address or apply oneself to something, direct one's efforts towards something, such as a question | - |
| (verb) access or locate by address | - |
| (verb) greet, as with a prescribed form, title, or name | Synonyms: call |
| addressable | (adjective) capable of being addressed | - |
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| addressed | (adjective) (of mail) marked with a destination | - |
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| addressee | (noun) one to whom something is addressed | - |
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| adduce | (verb) advance evidence for | Synonyms: abduce, cite |
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| adducent | (adjective) especially of muscles; bringing together or drawing toward the midline of the body or toward an adjacent part | Synonyms: adducting, adductive |
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| adducer | (noun) a discussant who offers an example or a reason or a proof | - |
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| adducing | (noun) citing as evidence or proof | - |
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| adduct | (noun) a compound formed by an addition reaction | - |
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| (verb) draw a limb towards the body | - |
| adducting | (adjective) especially of muscles; bringing together or drawing toward the midline of the body or toward an adjacent part | Synonyms: adducent, adductive |
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| adduction | (noun) (physiology) moving of a body part toward the central axis of the body | - |
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| adductive | (adjective) especially of muscles; bringing together or drawing toward the midline of the body or toward an adjacent part | Synonyms: adducent, adducting |
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| adductor | (noun) a muscle that draws a body part toward the median line | Synonyms: adductor muscle |
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| ade | (noun) a sweetened beverage of diluted fruit juice | Synonyms: fruit drink |
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| adelgid | (noun) any of various insects that feed and form galls on conifers | - |
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| adenine | (noun) (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA | Synonyms: A |
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| adenitis | (noun) inflammation of a gland or lymph node | - |
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| adenocarcinoma | (noun) malignant tumor originating in glandular epithelium | Synonyms: glandular cancer, glandular carcinoma |
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| adenocarcinomatous | (adjective) of or pertaining to adenocarcinoma | - |
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| adenohypophysis | (noun) the anterior lobe of the pituitary body; primarily glandular in nature | Synonyms: anterior pituitary, anterior pituitary gland |
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| adenoid | (adjective) relating to or resembling lymphatic glands or lymphoid tissue | - |
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| (noun) a collection of lymphatic tissue in the throat behind the uvula (on the posterior wall and roof of the nasopharynx) | Synonyms: Luschka's tonsil, pharyngeal tonsil, third tonsil, tonsilla adenoidea, tonsilla pharyngealis |
| adenoidal | (adjective) of or pertaining to the adenoids | - |
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| (adjective) sounding as if the nose were pinched | Synonyms: nasal, pinched |
| adenoidectomy | (noun) surgical removal of the adenoids; commonly performed along with tonsillectomy | - |
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| adenoma | (noun) a benign epithelial tumor of glandular origin | - |
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| adenomegaly | (noun) gland enlargement | - |
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| adenomyosarcoma | (noun) malignant renal tumor of young children characterized by hypertension and blood in the urine and the presence of a palpable mass | Synonyms: embryoma of the kidney, nephroblastoma, Wilms' tumor, Wilms tumour |
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| adenomyosis | (noun) the presence of endometrium elsewhere than in the lining of the uterus; causes premenstrual pain and dysmenorrhea | Synonyms: endometriosis |
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| adenopathy | (noun) a glandular disease or enlargement of glandular tissue (especially of the lymph glands) | - |
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| adenosine | (noun) (biochemistry) a nucleoside that is a structural component of nucleic acids; it is present in all living cells in a combined form as a constituent of DNA and RNA and ADP and ATP and AMP | - |
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| adenosis | (noun) a disorder of the glands of the body | Synonyms: gland disease, glandular disease, glandular disorder |
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| adenovirus | (noun) any of a group of viruses including those that in humans cause upper respiratory infections or infectious pinkeye | - |
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| adept | (adjective) having or showing knowledge and skill and aptitude | Synonyms: expert, good, practiced, proficient, skilful, skillful |
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| (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whiz, whizz, wiz, wizard |
| adeptness | (noun) skillful performance or ability without difficulty | Synonyms: adroitness, deftness, facility, quickness |
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| adequacy | (noun) the quality of being able to meet a need satisfactorily: | Synonyms: adequateness |
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| (noun) the quality of being sufficient for the end in view | Synonyms: sufficiency |
| adequate | (adjective) having the requisite qualities or resources to meet a task | Synonyms: equal |
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| (adjective) about average; acceptable | Synonyms: fair to middling, passable, tolerable |
| (adjective) sufficient for the purpose | Synonyms: enough |
| adequately | (adverb) in an adequate manner or to an adequate degree | - |
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| adequateness | (noun) the quality of being able to meet a need satisfactorily: | Synonyms: adequacy |
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| adermin | (noun) a B vitamin that is essential for metabolism of amino acids and starch | Synonyms: pyridoxal, pyridoxamine, pyridoxine, vitamin B6 |
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| adesite | (noun) dark greyish extrusive rock | - |
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| adhere | (verb) follow through or carry out a plan without deviation | - |
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| (verb) stick to firmly | Synonyms: bind, bond, hold fast, stick, stick to |
| (verb) come or be in close contact with; stick or hold together and resist separation | Synonyms: cleave, cling, cohere, stick |
| (verb) be compatible or in accordance with | - |
| (verb) be loyal to | Synonyms: stand by, stick, stick by |
| (verb) be a devoted follower or supporter | Synonyms: stick |
| adherence | (noun) faithful support for a cause or political party or religion | Synonyms: adhesion, attachment |
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| (noun) the property of sticking together (as of glue and wood) or the joining of surfaces of different composition | Synonyms: adhesion, adhesiveness, bond |
| adherent | (adjective) sticking fast | - |
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| (noun) someone who believes and helps to spread the doctrine of another | Synonyms: disciple |
| adhesion | (noun) faithful support for a cause or political party or religion | Synonyms: adherence, attachment |
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| (noun) the property of sticking together (as of glue and wood) or the joining of surfaces of different composition | Synonyms: adherence, adhesiveness, bond |
| (noun) a fibrous band of scar tissue that binds together normally separate anatomical structures | - |
| (noun) abnormal union of bodily tissues; most common in the abdomen | - |
| adhesive | (adjective) tending to adhere | - |
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| (noun) a substance that unites or bonds surfaces together | Synonyms: adhesive agent, adhesive material |
| adhesiveness | (noun) the property of sticking together (as of glue and wood) or the joining of surfaces of different composition | Synonyms: adherence, adhesion, bond |
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| adhocracy | (noun) an organization with little or no structure | - |
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| adiabatic | (adjective) occurring without loss or gain of heat | - |
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| adiabaticity | (noun) The condition of occurring without gain or loss of heat (and thus with no change in entropy, in the quasistatic approximation). | - |
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| adiaphoron | (noun) (Stoic philosophy) a matter having no moral merit or demerit. | - |
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| (noun) a religious ceremonial or ritual observance that is held to be an affair of the individual conscience because it is neither forbidden nor enjoined by the scriptures. | - |
| adience | (noun) (psychology) an urge to accept or approach a situation or an object | - |
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| adient | (adjective) characterized by acceptance or approach | - |
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| adieu | (noun) a farewell remark | Synonyms: adios, arrivederci, au revoir, auf wiedersehen, bye-bye, bye, cheerio, good-by, good-bye, good day, goodby, goodbye, sayonara, so long |
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| adios | (noun) a farewell remark | Synonyms: adieu, arrivederci, au revoir, auf wiedersehen, bye-bye, bye, cheerio, good-by, good-bye, good day, goodby, goodbye, sayonara, so long |
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| adipose | (adjective) composed of animal fat | - |
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| adiposeness | (noun) having the property of containing fat | Synonyms: adiposity, fattiness |
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| adiposis | (noun) the property of excessive fatness | Synonyms: corpulence, overweight, stoutness |
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