| orthodox | (adjective) adhering to what is commonly accepted | - |
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| orthodoxy | (noun) the quality of being orthodox (especially in religion) | - |
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| (noun) a belief or orientation agreeing with conventional standards | - |
| orthoepist | (noun) a practitioner of orthoepy (especially one of the 17th or 18th century scholars who proposed to reform English spelling so it would reflect pronunciation more closely) | - |
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| orthoepy | (noun) a term formerly used for the part of phonology that dealt with the `correct' pronunciation of words and its relation to `correct' orthography | - |
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| (noun) the way a word or a language is customarily spoken | Synonyms: pronunciation |
| orthogonal | (adjective) not pertinent to the matter under consideration | Synonyms: extraneous, immaterial, impertinent |
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| (adjective) having a set of mutually perpendicular axes; meeting at right angles | Synonyms: rectangular |
| (adjective) statistically unrelated | - |
| orthogonality | (noun) the quality of lying or intersecting at right angles | - |
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| (noun) the relation of opposition between things at right angles | Synonyms: orthogonal opposition, perpendicularity |
| orthographic | (adjective) of or relating to or expressed in orthography | - |
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| orthography | (noun) a method of representing the sounds of a language by written or printed symbols | Synonyms: writing system |
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| orthomolecular | (adjective) designating or relating to a form of treatment of mental disorders that seeks to restore biochemical balance in the body with large doses of vitamins and minerals | - |
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| orthomyxovirus | (noun) a group of viruses including those causing influenza | - |
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| orthopaedic | (adjective) of or relating to orthopedics | Synonyms: orthopedic, orthopedical |
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| orthopaedics | (noun) the branch of medical science concerned with disorders or deformities of the spine and joints | Synonyms: orthopedics |
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| orthopaedist | (noun) a specialist in correcting deformities of the skeletal system (especially in children) | Synonyms: orthopedist |
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| orthopedic | (adjective) of or relating to orthopedics | Synonyms: orthopaedic, orthopedical |
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| orthopedical | (adjective) of or relating to orthopedics | Synonyms: orthopaedic, orthopedic |
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| orthopedics | (noun) the branch of medical science concerned with disorders or deformities of the spine and joints | Synonyms: orthopaedics |
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| orthopedist | (noun) a specialist in correcting deformities of the skeletal system (especially in children) | Synonyms: orthopaedist |
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| orthophosphate | (noun) a salt of phosphoric acid | Synonyms: inorganic phosphate, phosphate |
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| orthopnea | (noun) form of dyspnea in which the person can breathe comfortably only when standing or sitting erect; associated with asthma and emphysema and angina pectoris | - |
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| orthopter | (noun) heavier-than-air craft that is propelled by the flapping of wings | Synonyms: ornithopter |
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| orthopteran | (noun) any of various insects having leathery forewings and membranous hind wings and chewing mouthparts | Synonyms: orthopteron, orthopterous insect |
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| orthopteron | (noun) any of various insects having leathery forewings and membranous hind wings and chewing mouthparts | Synonyms: orthopteran, orthopterous insect |
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| orthoptic | (adjective) of or relating to normal binocular vision | - |
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| orthoptics | (noun) treatment of defects of binocular vision (such as strabismus and amblyopia) by nonsurgical measures (especially by exercises to strengthen the eye muscles) | - |
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| orthoptist | (noun) a specialist in orthoptics | - |
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| orthoscope | (noun) an ophthalmoscope with a layer of water to neutralize the refraction of the cornea | - |
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| orthostatic | (adjective) pertaining to an upright standing posture | - |
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| orthotropous | (adjective) (of a plant ovule) completely straight with the micropyle at the apex | - |
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| ortolan | (noun) brownish Old World bunting often eaten as a delicacy | Synonyms: Emberiza hortulana, ortolan bunting |
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| ortygan | (noun) any of several East Indian birds | - |
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| outport | (noun) a subsidiary port built in deeper water than the original port (but usually farther from the center of trade) | - |
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| paleocortex | (noun) the olfactory cortex of the cerebrum | Synonyms: archipallium |
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| paleocortical | (adjective) of or relating to the olfactory cortex of the cerebrum | - |
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| passport | (noun) any quality or characteristic that gains a person a favorable reception or acceptance or admission | Synonyms: recommendation |
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| (noun) a document issued by a country to a citizen allowing that person to travel abroad and re-enter the home country | - |
| (noun) any authorization to pass or go somewhere | Synonyms: pass |
| pearlwort | (noun) any of various low-growing plants of the genus Sagina having small spherical flowers resembling pearls | Synonyms: pearl-weed, pearlweed |
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| pennyworth | (noun) the amount that can be bought for a penny | Synonyms: penn'orth |
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| pepperwort | (noun) annual herb used as salad green and garnish | Synonyms: common garden cress, garden pepper cress, Lepidium sativum, pepper grass |
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| (noun) any of several water ferns of the genus Marsilea having four leaflets | Synonyms: clover fern |
| pianoforte | (noun) a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds | Synonyms: forte-piano, piano |
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| pilewort | (noun) perennial herb native to Europe but naturalized elsewhere having heart-shaped leaves and yellow flowers resembling buttercups; its tuberous roots have been used as a poultice to relieve piles | Synonyms: lesser celandine, Ranunculus ficaria |
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| pillwort | (noun) European water fern found around margins of bodies of water or in wet acid soil having small globose sporocarps | Synonyms: Pilularia globulifera |
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| pipewort | (noun) aquatic perennial of North America and Ireland and Hebrides having translucent green leaves in a basal spiral and dense buttonlike racemes of minute white flowers | Synonyms: Eriocaulon aquaticum |
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| port | (adjective) located on the left side of a ship or aircraft | Synonyms: larboard |
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| (noun) an opening (in a wall or ship or armored vehicle) for firing through | Synonyms: embrasure, porthole |
| (noun) (computer science) computer circuit consisting of the hardware and associated circuitry that links one device with another (especially a computer and a hard disk drive or other peripherals) | Synonyms: interface |
| (noun) the left side of a ship or aircraft to someone who is aboard and facing the bow or nose | Synonyms: larboard |
| (noun) sweet dark-red dessert wine originally from Portugal | Synonyms: port wine |
| (noun) a place (seaport or airport) where people and merchandise can enter or leave a country | - |
| (verb) modify (software) for use on a different machine or platform | - |
| (verb) drink port | - |
| (verb) carry or hold with both hands diagonally across the body, especially of weapons | - |
| (verb) carry, bear, convey, or bring | - |
| (verb) turn or go to the port or left side, of a ship | - |
| (verb) put or turn on the left side, of a ship | - |
| (verb) land at or reach a port | - |
| (verb) bring to port | - |
| porta | (noun) an aperture or hole that opens into a bodily cavity | Synonyms: opening, orifice |
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| portability | (noun) the quality of being light enough to be carried | - |
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| portable | (adjective) easily or conveniently transported | - |
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| (adjective) of a motor designed to be attached to the outside of a boat's hull | - |
| (noun) a small light typewriter; usually with a case in which it can be carried | - |
| portage | (noun) carrying boats and supplies overland | - |
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| (noun) overland track between navigable waterways | - |
| (noun) the cost of carrying or transporting | - |
| portal | (noun) a grand and imposing entrance (often extended metaphorically) | - |
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| (noun) a short vein that carries blood into the liver | Synonyms: hepatic portal vein, portal vein, vena portae |
| (noun) a site that the owner positions as an entrance to other sites on the internet | Synonyms: portal site |
| portcullis | (noun) gate consisting of an iron or wooden grating that hangs in the entry to a castle or fortified town; can be lowered to prevent passage | - |
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| portend | (verb) indicate, as with a sign or an omen | Synonyms: augur, auspicate, betoken, bode, forecast, foreshadow, foretell, omen, predict, prefigure, presage, prognosticate |
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| portent | (noun) a sign of something about to happen | Synonyms: omen, presage, prodigy, prognostic, prognostication |
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| portentous | (adjective) puffed up with vanity | Synonyms: grandiloquent, overblown, pompous, pontifical |
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| (adjective) ominously prophetic | Synonyms: fateful, foreboding |
| (adjective) of momentous or ominous significance | Synonyms: prodigious |
| portentously | (adverb) in a portentous manner | - |
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| porter | (noun) a very dark sweet ale brewed from roasted unmalted barley | Synonyms: porter's beer |
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| (noun) a person employed to carry luggage and supplies | - |
| (noun) a railroad employee who assists passengers (especially on sleeping cars) | Synonyms: Pullman porter |
| (noun) someone who guards an entrance | Synonyms: door guard, doorkeeper, doorman, gatekeeper, hall porter, ostiary |
| (verb) carry luggage or supplies | - |
| porterage | (noun) the transportation of burdens by porters | - |
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| (noun) the charge for carrying burdens by porters | - |
| porterhouse | (noun) large steak from the thick end of the short loin containing a T-shaped bone and large piece of tenderloin | Synonyms: porterhouse steak |
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| portfolio | (noun) the role of the head of a government department | - |
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| (noun) a large, flat, thin case for carrying loose papers or drawings or maps; usually leather | - |
| (noun) a list of the financial assets held by an individual or a bank or other financial institution | - |
| (noun) a set of pieces of creative work collected to be shown to potential customers or employers | - |
| porthole | (noun) a window in a ship or airplane | - |
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| (noun) an opening (in a wall or ship or armored vehicle) for firing through | Synonyms: embrasure, port |
| portico | (noun) a porch or entrance to a building consisting of a covered and often columned area | - |
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| porticoed | (adjective) marked by columniation having free columns in porticoes either at both ends or at both sides of a structure | Synonyms: amphiprostylar, amphiprostyle, amphistylar |
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| portiere | (noun) a heavy curtain hung across a doorway | - |
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| portion | (noun) the allotment of some amount by dividing something | Synonyms: parcel, share |
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| (noun) something less than the whole of a human artifact | Synonyms: part |
| (noun) an individual quantity of food or drink taken as part of a meal | Synonyms: helping, serving |
| (noun) assets belonging to or due to or contributed by an individual person or group | Synonyms: part, percentage, share |
| (noun) money or property brought by a woman to her husband at marriage | Synonyms: dower, dowery, dowry |
| (noun) something determined in relation to something that includes it | Synonyms: component, component part, constituent, part |
| (noun) your overall circumstances or condition in life (including everything that happens to you) | Synonyms: circumstances, destiny, fate, fortune, lot, luck |
| (verb) give out | Synonyms: allot, assign |
| portly | (adjective) euphemisms for `fat' | Synonyms: stout |
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| portmanteau | (noun) a large travelling bag made of stiff leather | Synonyms: Gladstone, Gladstone bag |
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| (noun) a new word formed by joining two others and combining their meanings | Synonyms: blend, portmanteau word |
| portrait | (noun) any likeness of a person, in any medium | Synonyms: portrayal |
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| (noun) a word picture of a person's appearance and character | Synonyms: portraiture, portrayal |
| portraitist | (noun) a painter or drawer of portraits | Synonyms: limner, portrait painter, portrayer |
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| portraiture | (noun) the activity of making portraits | - |
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| (noun) a word picture of a person's appearance and character | Synonyms: portrait, portrayal |
| portray | (verb) portray in words | - |
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| (verb) make a portrait of | Synonyms: depict, limn |
| (verb) assume or act the character of | Synonyms: impersonate |
| (verb) represent abstractly, for example in a painting, drawing, or sculpture | Synonyms: present |
| portrayal | (noun) representation by drawing or painting etc | Synonyms: delineation, depiction |
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| (noun) acting the part of a character on stage; dramatically representing the character by speech and action and gesture | Synonyms: characterization, enactment, personation |
| (noun) any likeness of a person, in any medium | Synonyms: portrait |
| (noun) a representation by picture or portraiture | Synonyms: depicting, depiction, portraying |
| (noun) a word picture of a person's appearance and character | Synonyms: portrait, portraiture |
| portrayed | (adjective) represented graphically by sketch or design or lines | Synonyms: depicted, pictured |
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| portrayer | (noun) a painter or drawer of portraits | Synonyms: limner, portrait painter, portraitist |
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| portraying | (noun) a representation by picture or portraiture | Synonyms: depicting, depiction, portrayal |
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| portulaca | (noun) a plant of the genus Portulaca having pink or red or purple or white ephemeral flowers | - |
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| portwatcher | (noun) a watchman on a wharf | Synonyms: port watcher |
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| postmortal | (adjective) occurring or done after death | Synonyms: postmortem |
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| postmortem | (adjective) occurring or done after death | Synonyms: postmortal |
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| (adjective) after death or after an event | - |
| (noun) an examination and dissection of a dead body to determine cause of death or the changes produced by disease | Synonyms: autopsy, necropsy, PM, post-mortem, post-mortem examination, postmortem examination |
| (noun) discussion of an event after it has occurred | Synonyms: post-mortem |
| praiseworthily | (adverb) in an admirable manner | Synonyms: admirably, commendable, laudably |
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| praiseworthiness | (noun) the quality of being worthy of praise | Synonyms: laudability, laudableness |
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| praiseworthy | (adjective) worthy of high praise | Synonyms: applaudable, commendable, laudable |
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| praisworthiness | (noun) the property of deserving praise | - |
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| proportion | (noun) magnitude or extent | Synonyms: dimension |
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| (noun) harmonious arrangement or relation of parts or elements within a whole (as in a design) | Synonyms: balance, proportionality |
| (noun) the quotient obtained when the magnitude of a part is divided by the magnitude of the whole | - |
| (noun) the relation between things (or parts of things) with respect to their comparative quantity, magnitude, or degree | Synonyms: ratio |
| (noun) balance among the parts of something | Synonyms: symmetry |
| (verb) adjust in size relative to other things | - |
| (verb) give pleasant proportions to | - |
| proportionable | (adjective) proportionate | - |
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| proportional | (adjective) properly related in size or degree or other measurable characteristics; usually followed by `to' | Synonyms: relative |
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| (adjective) having a constant ratio | - |
| (noun) one of the quantities in a mathematical proportion | - |
| proportionality | (noun) harmonious arrangement or relation of parts or elements within a whole (as in a design) | Synonyms: balance, proportion |
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| (noun) a ratio of two quantities that is constant | - |
| proportionally | (adverb) to a proportionate degree | Synonyms: proportionately |
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| proportionate | (adjective) being in due proportion | - |
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| (adjective) exhibiting equivalence or correspondence among constituents of an entity or between different entities | Synonyms: harmonious, symmetrical |
| (adjective) agreeing in amount, magnitude, or degree | - |
| proportionately | (adverb) to a proportionate degree | Synonyms: proportionally |
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| (adverb) in a way that is in correspondence among the constituents of another entity | - |
| (adverb) in a way that agrees in amount, magnitude or degree | Synonyms: pro rata |
| proportionateness | (noun) the relation of corresponding in degree or size or amount | Synonyms: commensurateness, correspondence |
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| purport | (noun) the pervading meaning or tenor | Synonyms: drift |
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| (noun) the intended meaning of a communication | Synonyms: intent, spirit |
| (verb) propose or intend | Synonyms: aim, propose, purpose |
| (verb) have the often specious appearance of being, intending, or claiming | - |
| purportedly | (adverb) believed or reputed to be the case | Synonyms: supposedly |
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| quillwort | (noun) any of several spore-bearing aquatic or marsh plants having short rhizomes and leaves resembling quills; worldwide except Polynesia | - |
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| ragsorter | (noun) a worker who sorts rags and old clothing for new uses (as in papermaking) | - |
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| ragwort | (noun) widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity | Synonyms: benweed, ragweed, Senecio jacobaea, tansy ragwort |
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| (noun) American ragwort with yellow flowers | Synonyms: butterweed, Senecio glabellus |
| rapport | (noun) a relationship of mutual understanding or trust and agreement between people | Synonyms: resonance |
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| rapporteur | (noun) a recorder appointed by a committee to prepare reports of the meetings | - |
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| reapportion | (verb) allocate, distribute, or apportion anew | Synonyms: reallocate |
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| reapportionment | (noun) a new apportionment (especially a new apportionment of congressional seats in the United States on the basis of census results) | Synonyms: reallocation, reallotment |
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| report | (noun) the general estimation that the public has for a person | Synonyms: reputation |
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| (noun) a short account of the news | Synonyms: account, news report, story, write up |
| (noun) the act of informing by verbal report | Synonyms: account |
| (noun) an essay (especially one written as an assignment) | Synonyms: composition, paper, theme |
| (noun) a written document describing the findings of some individual or group | Synonyms: study, written report |
| (noun) a written evaluation of a student's scholarship and deportment | Synonyms: report card |
| (noun) a sharp explosive sound (especially the sound of a gun firing) | - |
| (verb) to give an account or representation of in words | Synonyms: account, describe |
| (verb) make known to the authorities | - |
| (verb) complain about; make a charge against | - |
| (verb) announce one's presence | - |
| (verb) announce as the result of an investigation or experience or finding | - |
| (verb) be responsible for reporting the details of, as in journalism | Synonyms: cover |
| reportable | (adjective) (of income) required by law to be reported | - |
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| (adjective) meriting report | - |
| reportage | (noun) the news as presented by reporters for newspapers or radio or television | Synonyms: coverage, reporting |
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| reported | (adjective) made known or told about; especially presented in a formal account | - |
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