| dampener | (noun) a device that dampens or moistens something | Synonyms: moistener |
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| dampening | (noun) the act of making something slightly wet | Synonyms: moistening |
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| damper | (noun) a depressing restraint | - |
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| (noun) a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations | Synonyms: muffler |
| (noun) a movable iron plate that regulates the draft in a stove or chimney or furnace | - |
| dapperness | (noun) stylishness as evidenced by a smart appearance | Synonyms: jauntiness, nattiness, rakishness |
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| deepening | (noun) a process of becoming deeper and more profound | - |
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| dependability | (noun) the quality of being dependable or reliable | Synonyms: dependableness, reliability, reliableness |
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| dependableness | (noun) the quality of being dependable or reliable | Synonyms: dependability, reliability, reliableness |
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| dependance | (noun) the state of relying on or being controlled by someone or something else | Synonyms: dependence, 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, dependence, dependency, habituation |
| dependant | (noun) a person who relies on another person for support (especially financial support) | Synonyms: dependent |
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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 |
| dependency | (noun) a geographical area politically controlled by a distant country | Synonyms: colony |
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| (noun) the state of relying on or being controlled by someone or something else | Synonyms: dependance, dependence |
| (noun) being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs) | Synonyms: addiction, dependance, dependence, habituation |
| dependent | (noun) a person who relies on another person for support (especially financial support) | Synonyms: dependant |
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| depersonalisation | (noun) representing a human being as a physical thing deprived of personal qualities or individuality | Synonyms: depersonalization, reification |
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| (noun) emotional dissociative disorder in which there is loss of contact with your own personal reality accompanied by feelings of unreality and strangeness | Synonyms: depersonalisation disorder, depersonalisation neurosis, depersonalization, depersonalization disorder, depersonalization neurosis |
| (noun) (existentialism) a loss of personal identity; a feeling of being an anonymous cog in an impersonal social machine | Synonyms: depersonalization |
| depersonalization | (noun) representing a human being as a physical thing deprived of personal qualities or individuality | Synonyms: depersonalisation, reification |
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| (noun) emotional dissociative disorder in which there is loss of contact with your own personal reality accompanied by feelings of unreality and strangeness | Synonyms: depersonalisation, depersonalisation disorder, depersonalisation neurosis, depersonalization disorder, depersonalization neurosis |
| (noun) (existentialism) a loss of personal identity; a feeling of being an anonymous cog in an impersonal social machine | Synonyms: depersonalisation |
| desperado | (noun) a bold outlaw (especially on the American frontier) | Synonyms: desperate criminal |
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| desperate | (noun) a person who is frightened and in need of help | - |
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| desperation | (noun) desperate recklessness | - |
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| (noun) a state in which all hope is lost or absent | Synonyms: despair |
| developer | (noun) photographic equipment consisting of a chemical solution for developing film | - |
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| (noun) someone who develops real estate (especially someone who prepares a site for residential or commercial use) | - |
| diapedesis | (noun) passage of blood cells (especially white blood cells) through intact capillary walls and into the surrounding tissue | - |
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| diapensia | (noun) any boreal low-growing evergreen plant of the genus Diapensia | - |
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| diaper | (noun) garment consisting of a folded cloth drawn up between the legs and fastened at the waist; worn by infants to catch excrement | Synonyms: napkin, nappy |
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| (noun) a fabric (usually cotton or linen) with a distinctive woven pattern of small repeated figures | - |
| diaphanoscope | (noun) An instrument for illuminating the interior of a cavity to determine the translucency of its walls. | - |
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| dipper | (noun) small North American diving duck; males have bushy head plumage | Synonyms: Bucephela albeola, bufflehead, butterball |
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| (noun) small stocky diving bird without webbed feet; frequents fast-flowing streams and feeds along the bottom | Synonyms: water ouzel |
| (noun) a ladle that has a cup with a long handle | - |
| disappearance | (noun) the act of leaving secretly or without explanation | Synonyms: disappearing |
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| (noun) gradually ceasing to be visible | Synonyms: fade |
| (noun) the event of passing out of sight | - |
| (noun) ceasing to exist | - |
| disappearing | (noun) the act of leaving secretly or without explanation | Synonyms: disappearance |
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| dispensability | (noun) the quality possessed by something that you can get along without | Synonyms: dispensableness |
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| dispensableness | (noun) the quality possessed by something that you can get along without | Synonyms: dispensability |
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| dispensary | (noun) clinic where medicine and medical supplies are dispensed | - |
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| dispensation | (noun) the act of dispensing (giving out in portions) | - |
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| (noun) an exemption from some rule or obligation | - |
| (noun) a share that has been dispensed or distributed | - |
| dispenser | (noun) a container so designed that the contents can be used in prescribed amounts | - |
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| (noun) a person who dispenses | - |
| dispersal | (noun) the act of dispersing or diffusing something | Synonyms: diffusion, dispersion, dissemination |
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| dispersion | (noun) the act of dispersing or diffusing something | Synonyms: diffusion, dispersal, dissemination |
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| (noun) the spatial or geographic property of being scattered about over a range, area, or volume | Synonyms: distribution |
| (noun) spreading widely or driving off | Synonyms: scattering |
| disrespect | (noun) a manner that is generally disrespectful and contemptuous | Synonyms: contempt |
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| (noun) a disrespectful mental attitude | - |
| (noun) an expression of lack of respect | Synonyms: discourtesy |
| distemper | (noun) a method of painting in which the pigments are mixed with water and a binder; used for painting posters or murals or stage scenery | - |
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| (noun) a painting created with paint that is made by mixing the pigments with water and a binder | - |
| (noun) paint made by mixing the pigments with water and a binder | - |
| (noun) an angry and disagreeable mood | Synonyms: ill humor, ill humour |
| (noun) any of various infectious viral diseases of animals | - |
| doctorspeak | (noun) medical jargon | - |
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| doorkeeper | (noun) someone who guards an entrance | Synonyms: door guard, doorman, gatekeeper, hall porter, ostiary, porter |
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| (noun) an official stationed at the entrance of a courtroom or legislative chamber | Synonyms: usher |
| (noun) the lowest of the minor Holy Orders in the unreformed Western Church but now suppressed by the Roman Catholic Church | Synonyms: ostiarius, ostiary |
| doorstopper | (noun) a stop that keeps open doors from moving | Synonyms: doorstop |
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| dope | (noun) street names for marijuana | Synonyms: gage, grass, green goddess, locoweed, Mary Jane, pot, sens, sess, skunk, smoke, weed |
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| (noun) slang terms for inside information | Synonyms: low-down, poop, the skinny |
| (noun) carbonated drink flavored with extract from kola nuts | Synonyms: cola |
| (noun) an ignorant or foolish person | Synonyms: boob, booby, dumbbell, dummy, pinhead |
| doppelganger | (noun) a ghostly double of a living person that haunts its living counterpart | - |
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| doppelzentner | (noun) a unit of weight equal to 100 kilograms in the metric system | Synonyms: centner, hundredweight, metric hundredweight |
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| doublespeak | (noun) any language that pretends to communicate but actually does not | - |
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| downslope | (noun) a downward slope or bend | Synonyms: declension, declination, decline, declivity, descent, fall |
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| draftsperson | (noun) a skilled worker who draws plans of buildings or machines | Synonyms: draftsman, draughtsman |
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| drainpipe | (noun) a pipe through which liquid is carried away | Synonyms: drain, waste pipe |
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| drape | (noun) hanging cloth used as a blind (especially for a window) | Synonyms: curtain, drapery, mantle, pall |
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| (noun) a sterile covering arranged over a patient's body during a medical examination or during surgery in order to reduce the possibility of contamination | - |
| (noun) the manner in which fabric hangs or falls | - |
| draper | (noun) a dealer in fabrics and sewing materials (and sometimes in clothing and drygoods) | - |
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| drapery | (noun) hanging cloth used as a blind (especially for a window) | Synonyms: curtain, drape, mantle, pall |
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| (noun) cloth gracefully draped and arranged in loose folds | - |
| dropper | (noun) pipet consisting of a small tube with a vacuum bulb at one end for drawing liquid in and releasing it a drop at a time | Synonyms: eye dropper |
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| drupe | (noun) fleshy indehiscent fruit with a single seed: e.g. almond, peach, plum, cherry, elderberry, olive, jujube | Synonyms: stone fruit |
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| drupelet | (noun) a small part of an aggregate fruit that resembles a drupe | - |
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| dumper | (noun) truck whose contents can be emptied without handling; the front end of the platform can be pneumatically raised so that the load is discharged by gravity | Synonyms: dump truck, tip truck, tipper, tipper lorry, tipper truck |
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| dupe | (noun) a person who is tricked or swindled | Synonyms: victim |
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| dupery | (noun) something intended to deceive; deliberate trickery intended to gain an advantage | Synonyms: fraud, fraudulence, hoax, humbug, put-on |
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| dyspepsia | (noun) a disorder of digestive function characterized by discomfort or heartburn or nausea | Synonyms: indigestion, stomach upset, upset stomach |
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| dyspeptic | (noun) a person suffering from indigestion | - |
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| eavesdropper | (noun) a secret listener to private conversations | - |
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| eightpence | (noun) a coin worth eight pennies | - |
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| electroscope | (noun) measuring instrument that detects electric charge; two gold leaves diverge owing to repulsion of charges with like sign | - |
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| elopement | (noun) the act of running away with a lover (usually to get married) | - |
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| empennage | (noun) the rear part of an aircraft | Synonyms: tail, tail assembly |
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| emperor | (noun) large richly colored butterfly | Synonyms: emperor butterfly |
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| (noun) large moth of temperate forests of Eurasia having heavily scaled transparent wings | Synonyms: emperor moth, Saturnia pavonia |
| (noun) red table grape of California | - |
| (noun) the male ruler of an empire | - |
| encyclopedia | (noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty | Synonyms: cyclopaedia, cyclopedia, encyclopaedia |
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| encyclopedism | (noun) profound scholarly knowledge | Synonyms: encyclopaedism, eruditeness, erudition, learnedness, learning, scholarship |
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| encyclopedist | (noun) a person who compiles information for encyclopedias | Synonyms: encyclopaedist |
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| endoscope | (noun) a long slender medical instrument for examining the interior of a bodily organ or performing minor surgery | - |
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| endosperm | (noun) nutritive tissue surrounding the embryo within seeds of flowering plants | - |
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| enteroscope | (noun) an instrument for inspecting the inside of the intestine. | - |
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| envelope | (noun) any wrapper or covering | - |
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| (noun) a flat (usually rectangular) container for a letter, thin package, etc. | - |
| (noun) the bag containing the gas in a balloon | Synonyms: gasbag |
| (noun) the maximum operating capability of a system (especially an aircraft) | - |
| (noun) a natural covering (as by a fluid) | - |
| (noun) a curve that is tangent to each of a family of curves | - |
| eosinopenia | (noun) a decrease in the number of eosinophils in the blood | - |
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| epee | (noun) a fencing sword similar to a foil but with a heavier blade | - |
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| ependyma | (noun) thin epithelial membrane lining the ventricles of the brain and the spinal cord canal | - |
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| epenthesis | (noun) the insertion of a vowel or consonant into a word to make its pronunciation easier | - |
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| epergne | (noun) a large table centerpiece with branching holders for fruit or sweets or flowers | - |
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| epidiascope | (noun) an optical projector that gives images of both transparent and opaque objects | - |
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| epipelon | (noun) cyanobacteria and eukaryotic algae that live on or in association with fine-grained substrata. | - |
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| episperm | (noun) protective outer layer of seeds of flowering plants | Synonyms: seed coat, testa |
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| epitope | (noun) the site on the surface of an antigen molecule to which an antibody attaches itself | Synonyms: antigenic determinant, determinant |
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| erysipelas | (noun) an acute streptococcal infection characterized by deep-red inflammation of the skin and mucous membranes | - |
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| escape | (noun) the act of escaping physically | Synonyms: flight |
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| (noun) nonperformance of something distasteful (as by deceit or trickery) that you are supposed to do | Synonyms: dodging, evasion |
| (noun) an inclination to retreat from unpleasant realities through diversion or fantasy | Synonyms: escapism |
| (noun) an avoidance of danger or difficulty | - |
| (noun) a means or way of escaping | - |
| (noun) a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level | Synonyms: escape cock, escape valve, relief valve, safety valve |
| (noun) the discharge of a fluid from some container | Synonyms: leak, leakage, outflow |
| (noun) a plant originally cultivated but now growing wild | - |
| escapee | (noun) someone who escapes | - |
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| escapement | (noun) mechanical device that regulates movement | - |
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| esophagoscope | (noun) an optical instrument for examining the inside of the esophagus | Synonyms: oesophagoscope |
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| estoppel | (noun) a rule of evidence whereby a person is barred from denying the truth of a fact that has already been settled | - |
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| exasperation | (noun) actions that cause great irritation (or even anger) | - |
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| (noun) an exasperated feeling of annoyance | Synonyms: aggravation |
| 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 |
| expectedness | (noun) ordinariness as a consequence of being expected and not surprising | - |
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| (noun) the state of being that is commonly observed | Synonyms: commonness |
| expectorant | (noun) a medicine promoting expectoration | Synonyms: expectorator |
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| expectoration | (noun) the act of spitting (forcefully expelling saliva) | Synonyms: spit, spitting |
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| (noun) the process of coughing up and spitting out | - |
| expectorator | (noun) a medicine promoting expectoration | Synonyms: expectorant |
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| (noun) a person who spits (ejects saliva or phlegm from the mouth) | Synonyms: spitter |
| expedience | (noun) the quality of being suited to the end in view | Synonyms: expediency |
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| (noun) taking advantage of opportunities without regard for the consequences for others | Synonyms: opportunism, self-interest, self-seeking |
| expediency | (noun) the quality of being suited to the end in view | Synonyms: expedience |
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| expedient | (noun) a means to an end; not necessarily a principled or ethical one | - |
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| expedition | (noun) a journey organized for a particular purpose | - |
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| (noun) a military campaign designed to achieve a specific objective in a foreign country | Synonyms: hostile expedition, military expedition |
| (noun) a journey taken for pleasure | Synonyms: excursion, jaunt, junket, outing, pleasure trip, sashay |
| (noun) the property of being prompt and efficient | Synonyms: despatch, dispatch, expeditiousness |
| (noun) an organized group of people undertaking a journey for a particular purpose | - |
| expeditiousness | (noun) the property of being prompt and efficient | Synonyms: despatch, dispatch, expedition |
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| expelling | (noun) any of several bodily processes by which substances go out of the body | Synonyms: discharge, emission |
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| expender | (noun) someone who spends money to purchase goods or services | Synonyms: disburser, spender |
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| expending | (noun) the act of spending money for goods or services | Synonyms: expenditure |
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| expenditure | (noun) the act of spending money for goods or services | Synonyms: expending |
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| (noun) the act of consuming something | Synonyms: consumption, using up |
| (noun) money paid out; an amount spent | Synonyms: outgo, outlay, spending |
| expense | (noun) a detriment or sacrifice | - |
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| (noun) amounts paid for goods and services that may be currently tax deductible (as opposed to capital expenditures) | Synonyms: disbursal, disbursement |
| (noun) money spent to perform work and usually reimbursed by an employer | - |