| accidence | (noun) the part of grammar that deals with the inflections of words | Synonyms: inflectional morphology |
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| accident | (noun) anything that happens suddenly or by chance without an apparent cause | Synonyms: chance event, fortuity, stroke |
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| (noun) an unfortunate mishap; especially one causing damage or injury | - |
| accidental | (noun) a musical notation that makes a note sharp or flat or natural although that is not part of the key signature | - |
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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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| 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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| adenohypophysis | (noun) the anterior lobe of the pituitary body; primarily glandular in nature | Synonyms: anterior pituitary, anterior pituitary gland |
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| adenoid | (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 |
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| 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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| antecedence | (noun) preceding in time | Synonyms: antecedency, anteriority, precedence, precedency, priority |
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| antecedency | (noun) preceding in time | Synonyms: antecedence, anteriority, precedence, precedency, priority |
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| antecedent | (noun) the referent of an anaphor; a phrase or clause that is referred to by an anaphoric pronoun | - |
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| (noun) a preceding occurrence or cause or event | - |
| (noun) someone from whom you are descended (but usually more remote than a grandparent) | Synonyms: ancestor, ascendant, ascendent, root |
| (noun) anything that precedes something similar in time | Synonyms: forerunner |
| ascendence | (noun) the state that exists when one person or group has power over another | Synonyms: ascendance, ascendancy, ascendency, control, dominance |
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| ascendency | (noun) the state that exists when one person or group has power over another | Synonyms: ascendance, ascendancy, ascendence, control, dominance |
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| ascendent | (noun) someone from whom you are descended (but usually more remote than a grandparent) | Synonyms: ancestor, antecedent, ascendant, root |
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| (noun) position or state of being dominant or in control | Synonyms: ascendant |
| broadening | (noun) the action of making broader | - |
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| (noun) the act of making something wider | Synonyms: widening |
| (noun) an increase in width | Synonyms: widening |
| burden | (noun) weight to be borne or conveyed | Synonyms: load, loading |
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| (noun) the central idea that is expanded in a document or discourse | - |
| (noun) an onerous or difficult concern | Synonyms: encumbrance, incumbrance, load, onus |
| (noun) the central meaning or theme of a speech or literary work | Synonyms: core, effect, essence, gist |
| burdensomeness | (noun) unwelcome burdensome difficulty | Synonyms: heaviness, onerousness, oppressiveness |
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| cadence | (noun) a recurrent rhythmical series | Synonyms: cadency |
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| (noun) the close of a musical section | - |
| (noun) (prosody) the accent in a metrical foot of verse | Synonyms: beat, measure, meter, metre |
| cadency | (noun) a recurrent rhythmical series | Synonyms: cadence |
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| cadenza | (noun) a brilliant solo passage occurring near the end of a piece of music | - |
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| caladenia | (noun) any of various orchids of the genus Caladenia | - |
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| chlorobenzylidenemalononitrile | (noun) a tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema | Synonyms: CS gas |
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| churchwarden | (noun) an officer in the Episcopal church who helps a parish priest with secular matters | - |
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| coincidence | (noun) the temporal property of two things happening at the same time | Synonyms: co-occurrence, concurrence, conjunction |
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| (noun) the quality of occupying the same position or area in space | - |
| (noun) an event that might have been arranged although it was really accidental | Synonyms: happenstance |
| condensate | (noun) atmospheric moisture that has condensed because of cold | Synonyms: condensation |
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| (noun) a product of condensation | - |
| condensation | (noun) the act of increasing the density of something | Synonyms: condensing |
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| (noun) (psychoanalysis) an unconscious process whereby two ideas or images combine into a single symbol; especially in dreams | - |
| (noun) a shortened version of a written work | Synonyms: abridgement, abridgment, capsule |
| (noun) the process or result of becoming smaller or pressed together | Synonyms: compression, contraction |
| (noun) atmospheric moisture that has condensed because of cold | Synonyms: condensate |
| (noun) the process of changing from a gaseous to a liquid or solid state | - |
| condenser | (noun) lens used to concentrate light on an object | Synonyms: optical condenser |
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| (noun) an electrical device characterized by its capacity to store an electric charge | Synonyms: capacitance, capacitor, electrical condenser |
| (noun) a hollow coil that condenses by abstracting heat | - |
| (noun) an apparatus that converts vapor into liquid | - |
| condensing | (noun) the act of increasing the density of something | Synonyms: condensation |
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| confidence | (noun) freedom from doubt; belief in yourself and your abilities | Synonyms: assurance, authority, self-assurance, self-confidence, sureness |
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| (noun) a secret that is confided or entrusted to another | - |
| (noun) a feeling of trust (in someone or something) | - |
| (noun) a state of confident hopefulness that events will be favorable | - |
| (noun) a trustful relationship | Synonyms: trust |
| confidentiality | (noun) discretion in keeping secret information | - |
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| (noun) the state of being secret | - |
| corespondent | (noun) the codefendant charged with adultery with the estranged spouse in a divorce proceeding | Synonyms: co-respondent |
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| correspondence | (noun) similarity by virtue of corresponding | Synonyms: parallelism |
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| (noun) compatibility of observations | Synonyms: agreement |
| (noun) (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane | Synonyms: balance, symmetricalness, symmetry |
| (noun) communication by the exchange of letters | - |
| (noun) the relation of corresponding in degree or size or amount | Synonyms: commensurateness, proportionateness |
| correspondent | (noun) someone who communicates by means of letters | Synonyms: letter writer |
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| (noun) a journalist employed to provide news stories for newspapers or broadcast media | Synonyms: newswriter |
| counterevidence | (noun) (philosophy, law, sciences) Evidence which tends to disprove a claim or hypothesis. | Synonyms: counter-evidence |
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| credence | (noun) a kind of sideboard or buffet | Synonyms: credenza |
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| (noun) the mental attitude that something is believable and should be accepted as true | Synonyms: acceptance |
| credendum | (noun) (Christianity) any of the sections into which a creed or other statement of doctrine is divided | Synonyms: article of faith |
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| credential | (noun) a document attesting to the truth of certain stated facts | Synonyms: certificate, certification, credentials |
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| credentials | (noun) a document attesting to the truth of certain stated facts | Synonyms: certificate, certification, credential |
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| credenza | (noun) a kind of sideboard or buffet | Synonyms: credence |
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| crudeness | (noun) an impolite manner that is vulgar and lacking tact or refinement | Synonyms: crudity, gaucheness |
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| (noun) an unpolished unrefined quality | Synonyms: roughness |
| (noun) a wild or unrefined state | Synonyms: crudity, primitiveness, primitivism, rudeness |
| deadening | (noun) the act of making something futile and useless (as by routine) | Synonyms: constipation, impairment, stultification |
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| decadence | (noun) the state of being degenerate in mental or moral qualities | Synonyms: decadency, degeneracy, degeneration |
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| decadency | (noun) the state of being degenerate in mental or moral qualities | Synonyms: decadence, degeneracy, degeneration |
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| decadent | (noun) a person who has fallen into a decadent state (morally or artistically) | - |
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| decedent | (noun) someone who is no longer alive | Synonyms: dead person, dead soul, deceased, deceased person, departed |
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| den | (noun) a room that is comfortable and secluded | - |
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| (noun) a unit of 8 to 10 cub scouts | - |
| (noun) the habitation of wild animals | Synonyms: lair |
| (noun) a hiding place; usually a remote place used by outlaws | Synonyms: hideaway, hideout |
| denationalisation | (noun) changing something from state to private ownership or control | Synonyms: denationalization, privatisation, privatization |
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| denationalization | (noun) changing something from state to private ownership or control | Synonyms: denationalisation, privatisation, privatization |
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| denaturant | (noun) any substance that serves as a denaturing agent | - |
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| denazification | (noun) social process of removing Nazis from official positions and giving up any allegiance to Nazism | Synonyms: de-Nazification |
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| dendrite | (noun) short fiber that conducts toward the cell body of the neuron | - |
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| dendrobium | (noun) a plant of the genus Dendrobium having stems like cane and usually showy racemose flowers | - |
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| dendrology | (noun) the study of wooden plants | - |
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| dengue | (noun) an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints | Synonyms: breakbone fever, dandy fever, dengue fever |
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| denial | (noun) a defendant's answer or plea denying the truth of the charges against him | Synonyms: defence, defense, demurrer |
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| (noun) renunciation of your own interests in favor of the interests of others | Synonyms: abnegation, self-abnegation, self-denial, self-renunciation |
| (noun) the act of refusing to comply (as with a request) | - |
| (noun) the act of asserting that something alleged is not true | Synonyms: disaffirmation |
| (noun) (psychiatry) a defense mechanism that denies painful thoughts | - |
| denier | (noun) any of various former European coins of different denominations | - |
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| (noun) a unit of measurement for the fineness of silk or nylon or rayon | - |
| (noun) one who denies | - |
| denigration | (noun) the act of expressing disapproval (especially of yourself) | Synonyms: deprecation |
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| (noun) an abusive attack on a person's character or good name | Synonyms: aspersion, calumny, defamation, slander |
| (noun) a belittling comment | Synonyms: belittling |
| denim | (noun) a coarse durable twill-weave cotton fabric | Synonyms: dungaree, jean |
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| (noun) (used in the plural) close-fitting trousers of heavy denim for manual work or casual wear | Synonyms: blue jeans, jeans |
| denitrator | (noun) Any device used to remove nitrates or other nitrogen compounds, especially from water. | - |
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| denivelation | (noun) the difference in level (depth) between two parts of a cave system, usually the highest and lowest known point. | - |
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| denizen | (noun) a plant or animal naturalized in a region | - |
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| (noun) a person who inhabits a particular place | Synonyms: dweller, habitant, indweller, inhabitant |
| denomination | (noun) identifying word or words by which someone or something is called and classified or distinguished from others | Synonyms: appellation, appellative, designation |
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| (noun) a group of religious congregations having its own organization and a distinctive faith | - |
| (noun) a class of one kind of unit in a system of numbers or measures or weights or money | - |
| denominationalism | (noun) a narrow-minded adherence to a particular sect or party or denomination | Synonyms: sectarianism |
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| (noun) the tendency, in Protestantism, to separate into religious denominations or to advocate such separations | - |
| denominator | (noun) the divisor of a fraction | - |
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| denotation | (noun) the most direct or specific meaning of a word or expression; the class of objects that an expression refers to | Synonyms: extension, reference |
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| (noun) the act of indicating or pointing out by name | Synonyms: indication |
| denotatum | (noun) an actual object referred to by a linguistic expression | - |
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| denouement | (noun) the final resolution of the main complication of a literary or dramatic work | - |
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| (noun) the outcome of a complex sequence of events | - |
| denouncement | (noun) a public act of denouncing | Synonyms: denunciation |
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| denseness | (noun) the amount per unit size | Synonyms: density |
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| (noun) the spatial property of being crowded together | Synonyms: compactness, concentration, density, tightness |
| (noun) the quality of being mentally slow and limited | Synonyms: dumbness, slow-wittedness |
| densification | (noun) an increase in the density of something | Synonyms: compaction, compression, concretion |
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| densimeter | (noun) a measuring instrument for determining density or specific gravity | Synonyms: densitometer |
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| densitometer | (noun) a measuring instrument for determining optical or photographic density | - |
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| (noun) a measuring instrument for determining density or specific gravity | Synonyms: densimeter |
| densitometry | (noun) measuring the optical density of a substance by shining light on it and measuring its transmission | - |
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| density | (noun) the amount per unit size | Synonyms: denseness |
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| (noun) the spatial property of being crowded together | Synonyms: compactness, concentration, denseness, tightness |
| dent | (noun) an impression in a surface (as made by a blow) | Synonyms: ding, gouge, nick |
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| (noun) an appreciable consequence (especially a lessening) | - |
| (noun) a depression scratched or carved into a surface | Synonyms: incision, prick, scratch, slit |
| dental | (noun) a consonant articulated with the tip of the tongue near the gum ridge | Synonyms: alveolar, alveolar consonant, dental consonant |
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| denticle | (noun) small pointed ridge on the exoskeleton of an arthropod | - |
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| dentifrice | (noun) a substance for cleaning the teeth; applied with a toothbrush | - |
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| dentin | (noun) bone (calcified tissue) surrounding the pulp cavity of a tooth | Synonyms: dentine |
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| (noun) a calcareous material harder and denser than bone that comprises the bulk of a tooth | Synonyms: dentine |
| dentine | (noun) bone (calcified tissue) surrounding the pulp cavity of a tooth | Synonyms: dentin |
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| (noun) a calcareous material harder and denser than bone that comprises the bulk of a tooth | Synonyms: dentin |
| dentist | (noun) a person qualified to practice dentistry | Synonyms: dental practitioner, tooth doctor |
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| dentistry | (noun) the branch of medicine dealing with the anatomy and development and diseases of the teeth | Synonyms: dental medicine, odontology |
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| dentition | (noun) the kind and number and arrangement of teeth (collectively) in a person or animal | Synonyms: teeth |
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| (noun) the eruption through the gums of baby teeth | Synonyms: odontiasis, teething |
| denture | (noun) a dental appliance that artificially replaces missing teeth | Synonyms: dental plate, plate |
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| denturist | (noun) someone who makes dental appliances (bridges and dentures) | Synonyms: dental technician |
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| denudation | (noun) the removal of covering | Synonyms: baring, husking, stripping, uncovering |
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| denunciation | (noun) a public act of denouncing | Synonyms: denouncement |
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| deoxyadenosine | (noun) a nucleoside component of DNA; composed of adenosine and deoxyribose | - |
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| dependence | (noun) the state of relying on or being controlled by someone or something else | Synonyms: dependance, dependency |
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| (noun) being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs) | Synonyms: addiction, dependance, dependency, habituation |