| ratite | (noun) flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches, cassowaries, emus, moas, rheas, kiwis, elephant birds | Synonyms: flightless bird, ratite bird |
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| ratlin | (noun) (nautical) a small horizontal rope between the shrouds of a sailing ship; they form a ladder for climbing aloft | Synonyms: ratline |
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| ratline | (noun) (nautical) a small horizontal rope between the shrouds of a sailing ship; they form a ladder for climbing aloft | Synonyms: ratlin |
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| ratsbane | (noun) a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer | Synonyms: arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic |
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| rattail | (noun) deep-sea fish with a large head and body and long tapering tail | Synonyms: grenadier, rattail fish |
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| rattan | (noun) a switch made from the stems of the rattan palms | Synonyms: ratan |
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| (noun) climbing palm of Sri Lanka and southern India remarkable for the great length of the stems which are used for malacca canes | Synonyms: Calamus rotang, rattan palm |
| (noun) the stem of various climbing palms of the genus Calamus and related genera used to make wickerwork and furniture and canes | Synonyms: rattan cane |
| ratter | (noun) any of several breeds of terrier developed to catch rats | Synonyms: rat terrier |
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| (noun) a disloyal person who betrays or deserts his cause or religion or political party or friend etc. | Synonyms: apostate, deserter, recreant, renegade, turncoat |
| ratting | (noun) to furnish incriminating evidence to an officer of the law (usually in return for favors) | Synonyms: informing |
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| rattle | (noun) loosely connected horny sections at the end of a rattlesnake's tail | - |
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| (noun) a baby's toy that makes percussive noises when shaken | - |
| (noun) a rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders) | Synonyms: rale, rattling |
| rattlebox | (noun) any of various plants of the genus Crotalaria having inflated pods within which the seeds rattle; used for pasture and green-manure crops | Synonyms: crotalaria |
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| rattler | (noun) pit viper with horny segments at the end of the tail that rattle when shaken | Synonyms: rattlesnake |
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| (noun) a railroad train consisting of freight cars | Synonyms: freight train |
| rattlesnake | (noun) pit viper with horny segments at the end of the tail that rattle when shaken | Synonyms: rattler |
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| rattling | (noun) a rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders) | Synonyms: rale, rattle |
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| rattrap | (noun) a trap for catching rats | - |
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| (noun) filthy run-down dilapidated housing | - |
| (noun) a difficult entangling situation | - |
| raunch | (noun) the quality of lacking taste and refinement | Synonyms: coarseness, commonness, grossness, vulgarism, vulgarity |
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| rauvolfia | (noun) any shrub or small tree of the genus Rauwolfia having leaves in whorls and cymose flowers; yield substances used medicinally especially as emetics or purgatives or antihypertensives | Synonyms: rauwolfia |
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| rauwolfia | (noun) any shrub or small tree of the genus Rauwolfia having leaves in whorls and cymose flowers; yield substances used medicinally especially as emetics or purgatives or antihypertensives | Synonyms: rauvolfia |
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| (noun) any of several alkaloids extracted from the shrub Rauwolfia serpentina | - |
| ravage | (noun) (usually plural) a destructive action | Synonyms: depredation |
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| ravaging | (noun) plundering with excessive damage and destruction | Synonyms: devastation |
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| rave | (noun) an extravagantly enthusiastic review | - |
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| (noun) a dance party that lasts all night and electronically synthesized music is played | - |
| ravehook | (noun) a hooked hand tool used to prepare the seams of a boat for oakum | - |
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| ravel | (noun) a row of unravelled stitches | Synonyms: ladder, run |
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| raveling | (noun) a bit of fiber that has become separated from woven fabric | Synonyms: ravelling |
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| ravelling | (noun) a bit of fiber that has become separated from woven fabric | Synonyms: raveling |
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| raven | (noun) large black bird with a straight bill and long wedge-shaped tail | Synonyms: Corvus corax |
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| ravenala | (noun) giant treelike plant having edible nuts and leafstalks that yield a refreshing drink of clear watery sap; reputedly an emergency source of water for travelers | Synonyms: Ravenala madagascariensis, traveler's tree, traveller's tree |
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| ravenousness | (noun) excessive desire to eat | Synonyms: edacity, esurience, voraciousness, voracity |
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| raver | (noun) someone who rants and raves; speaks in a violent or loud manner | Synonyms: ranter |
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| (noun) a participant in a rave dancing party | - |
| ravigote | (noun) veloute sauce seasoned with chopped chervil, chives, tarragon, shallots and capers | Synonyms: ravigotte |
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| ravigotte | (noun) veloute sauce seasoned with chopped chervil, chives, tarragon, shallots and capers | Synonyms: ravigote |
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| ravine | (noun) a deep narrow steep-sided valley (especially one formed by running water) | - |
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| raving | (noun) declaiming wildly | - |
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| ravioli | (noun) small circular or square cases of dough with savory fillings | Synonyms: cappelletti |
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| ravisher | (noun) someone who assaults others sexually | Synonyms: debaucher, violator |
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| (noun) a very attractive or seductive looking woman | Synonyms: beauty, dish, knockout, looker, lulu, mantrap, peach, smasher, stunner, sweetheart |
| ravishment | (noun) the crime of forcing a person to submit to sexual intercourse against his or her will | Synonyms: assault, rape, violation |
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| (noun) a feeling of delight at being filled with wonder and enchantment | Synonyms: entrancement |
| raw | (noun) informal terms for nakedness | Synonyms: altogether, birthday suit |
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| rawhide | (noun) untanned hide especially of cattle; cut in strips it is used for whips and ropes | - |
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| rawness | (noun) lack of experience and the knowledge and understanding derived from experience | Synonyms: inexperience |
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| (noun) the state of being crude and incomplete and imperfect | Synonyms: incompleteness |
| (noun) a pain that is felt (as when the area is touched) | Synonyms: soreness, tenderness |
| (noun) a chilly dampness | - |
| ray | (noun) cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins | - |
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| (noun) any of the stiff bony spines in the fin of a fish | - |
| (noun) the syllable naming the second (supertonic) note of any major scale in solmization | Synonyms: re |
| (noun) a column of light (as from a beacon) | Synonyms: beam, beam of light, irradiation, light beam, ray of light, shaft, shaft of light |
| (noun) a group of nearly parallel lines of electromagnetic radiation | Synonyms: beam, electron beam |
| (noun) a branch of an umbel or an umbelliform inflorescence | - |
| (noun) (mathematics) a straight line extending from a point | - |
| rayon | (noun) a synthetic silklike fabric | - |
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| rayons | (noun) women's stockings made from a sheer material (nylon or rayon or silk) | Synonyms: nylon stocking, nylons, rayon stocking, silk stocking |
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| razbliuto | (noun) the sentimental feeling you have about someone you once loved but no longer do | - |
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| razing | (noun) complete destruction of a building | Synonyms: demolishing, leveling, tearing down |
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| (noun) the event of a structure being completely demolished and leveled | Synonyms: wrecking |
| razmataz | (noun) any exciting and complex play intended to confuse (dazzle) the opponent | Synonyms: razzle-dazzle, razzle, razzmatazz |
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| razor | (noun) edge tool used in shaving | - |
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| razorback | (noun) a mongrel hog with a thin body and long legs and a ridged back; a wild or semi-wild descendant of improved breeds; found chiefly in the southeastern United States | Synonyms: razorback hog, razorbacked hog |
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| (noun) any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin | Synonyms: rorqual |
| razorbill | (noun) black-and-white northern Atlantic auk having a compressed sharp-edged bill | Synonyms: Alca torda, razor-billed auk |
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| razorblade | (noun) a blade that has very sharp edge | - |
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| razz | (noun) a cry or noise made to express displeasure or contempt | Synonyms: bird, boo, Bronx cheer, hiss, hoot, raspberry, razzing, snort |
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| razzing | (noun) a cry or noise made to express displeasure or contempt | Synonyms: bird, boo, Bronx cheer, hiss, hoot, raspberry, razz, snort |
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| razzle | (noun) any exciting and complex play intended to confuse (dazzle) the opponent | Synonyms: razmataz, razzle-dazzle, razzmatazz |
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| razzmatazz | (noun) any exciting and complex play intended to confuse (dazzle) the opponent | Synonyms: razmataz, razzle-dazzle, razzle |
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| rbi | (noun) a run that is the result of the batter's performance | Synonyms: run batted in |
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| re | (noun) the syllable naming the second (supertonic) note of any major scale in solmization | Synonyms: ray |
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| reabsorption | (noun) the organic process in which the substance of some differentiated structure that has been produced by the body undergoes lysis and assimilation | Synonyms: resorption |
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| reach | (noun) the act of physically reaching or thrusting out | Synonyms: reaching, stretch |
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| (noun) an area in which something acts or operates or has power or control: | Synonyms: ambit, compass, orbit, range, scope |
| (noun) the limit of capability | Synonyms: compass, grasp, range |
| (noun) the limits within which something can be effective | Synonyms: range |
| reaching | (noun) accomplishment of an objective | Synonyms: arrival |
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| (noun) the act of physically reaching or thrusting out | Synonyms: reach, stretch |
| reactance | (noun) opposition to the flow of electric current resulting from inductance and capacitance (rather than resistance) | - |
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| reactant | (noun) a chemical substance that is present at the start of a chemical reaction | - |
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| reaction | (noun) a bodily process occurring due to the effect of some antecedent stimulus or agent | Synonyms: response |
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| (noun) doing something in opposition to another way of doing it that you don't like | - |
| (noun) an idea evoked by some experience | - |
| (noun) extreme conservatism in political or social matters | - |
| (noun) (mechanics) the equal and opposite force that is produced when any force is applied to a body | - |
| (noun) a response that reveals a person's feelings or attitude | - |
| (noun) (chemistry) a process in which one or more substances are changed into others | Synonyms: chemical reaction |
| reactionary | (noun) an extreme conservative; an opponent of progress or liberalism | Synonyms: extreme right-winger, ultraconservative |
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| reactionism | (noun) the political orientation of reactionaries | - |
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| reactivity | (noun) responsive to stimulation | Synonyms: responsiveness |
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| (noun) ready susceptibility to chemical change | - |
| reactor | (noun) (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements | Synonyms: nuclear reactor |
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| (noun) an electrical device used to introduce reactance into a circuit | - |
| read | (noun) something that is read | - |
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| readability | (noun) the quality of written language that makes it easy to read and understand | - |
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| (noun) a quality of writing (print or handwriting) that can be easily read | Synonyms: legibility |
| reader | (noun) one of a series of texts for students learning to read | - |
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| (noun) a person who enjoys reading | - |
| (noun) a public lecturer at certain universities | Synonyms: lector, lecturer |
| (noun) someone who contracts to receive and pay for a service or a certain number of issues of a publication | Synonyms: subscriber |
| (noun) a person who can read; a literate person | - |
| (noun) someone who reads proof in order to find errors and mark corrections | Synonyms: proofreader |
| (noun) someone who reads manuscripts and judges their suitability for publication | Synonyms: referee, reviewer |
| (noun) someone who reads the lessons in a church service; someone ordained in a minor order of the Roman Catholic Church | Synonyms: lector |
| readership | (noun) the audience reached by written communications (books or magazines or newspapers etc.) | - |
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| readiness | (noun) prompt willingness | Synonyms: eagerness, forwardness, zeal |
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| (noun) a natural effortlessness | Synonyms: facility |
| (noun) (psychology) being temporarily ready to respond in a particular way | Synonyms: set |
| (noun) the state of having been made ready or prepared for use or action (especially military action) | Synonyms: preparation, preparedness |
| reading | (noun) the act of measuring with meters or similar instruments | Synonyms: meter reading |
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| (noun) the cognitive process of understanding a written linguistic message | - |
| (noun) a mental representation of the meaning or significance of something | Synonyms: interpretation, version |
| (noun) a datum about some physical state that is presented to a user by a meter or similar instrument | Synonyms: indication, meter reading |
| (noun) written material intended to be read | Synonyms: reading material |
| (noun) a particular interpretation or performance | - |
| (noun) a public instance of reciting or repeating (from memory) something prepared in advance | Synonyms: recital, recitation |
| readjustment | (noun) the act of adjusting again (to changed circumstances) | - |
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| (noun) the act of adjusting something to match a standard | Synonyms: adjustment, registration |
| readmission | (noun) the act of admitting someone again | - |
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| readout | (noun) an electronic device that displays information | Synonyms: read-out |
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| (noun) the information displayed or recorded on an electronic device | Synonyms: read-out |
| (noun) the output of a computer in readable form | Synonyms: read-out |
| ready | (noun) poised for action | - |
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| readying | (noun) the activity of putting or setting in order in advance of some act or purpose | Synonyms: preparation |
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| reaffiliation | (noun) affiliation anew | - |
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| reaffirmation | (noun) renewed affirmation | Synonyms: reassertion |
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| reagent | (noun) a chemical agent for use in chemical reactions | - |
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| reagin | (noun) an immunoglobulin E that is formed as an antibody against allergens (such as pollen); attaches to cell membranes causing the release of histamine and other substances responsible for the local inflammation characteristic of an allergy | - |
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| real | (noun) any rational or irrational number | Synonyms: real number |
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| (noun) an old small silver Spanish coin | - |
| (noun) the basic unit of money in Brazil; equal to 100 centavos | - |
| realgar | (noun) a rare soft orange mineral consisting of arsenic sulphide; an important ore of arsenic | - |
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| realisation | (noun) making real or giving the appearance of reality | Synonyms: actualisation, actualization, realization |
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| (noun) a sale in order to obtain money (as a sale of stock or a sale of the estate of a bankrupt person) or the money so obtained | Synonyms: realization |
| (noun) something that is made real or concrete | Synonyms: fruition, realization |
| (noun) the completion or enrichment of a piece of music left sparsely notated by a composer | Synonyms: realization |
| (noun) coming to understand something clearly and distinctly | Synonyms: realization, recognition |
| (noun) a musical composition that has been completed or enriched by someone other than the composer | Synonyms: realization |
| realism | (noun) the attribute of accepting the facts of life and favoring practicality and literal truth | Synonyms: pragmatism |
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| (noun) (philosophy) the philosophical doctrine that physical objects continue to exist when not perceived | Synonyms: naive realism |
| (noun) (philosophy) the philosophical doctrine that abstract concepts exist independent of their names | Synonyms: Platonism |
| (noun) an artistic movement in 19th century France; artists and writers strove for detailed realistic and factual description | Synonyms: naturalism |
| (noun) the state of being actual or real | Synonyms: reality, realness |
| realist | (noun) a philosopher who believes that universals are real and exist independently of anyone thinking of them | - |
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| (noun) a painter who represents the world realistically and not in an idealized or romantic style | - |
| (noun) a person who accepts the world as it literally is and deals with it accordingly | - |
| reality | (noun) the quality possessed by something that is real | - |
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| (noun) all of your experiences that determine how things appear to you | Synonyms: world |
| (noun) the state of being actual or real | Synonyms: realism, realness |
| (noun) the state of the world as it really is rather than as you might want it to be | - |
| realization | (noun) making real or giving the appearance of reality | Synonyms: actualisation, actualization, realisation |
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| (noun) a sale in order to obtain money (as a sale of stock or a sale of the estate of a bankrupt person) or the money so obtained | Synonyms: realisation |
| (noun) something that is made real or concrete | Synonyms: fruition, realisation |
| (noun) the completion or enrichment of a piece of music left sparsely notated by a composer | Synonyms: realisation |
| (noun) coming to understand something clearly and distinctly | Synonyms: realisation, recognition |
| (noun) a musical composition that has been completed or enriched by someone other than the composer | Synonyms: realisation |
| reallocation | (noun) a new apportionment (especially a new apportionment of congressional seats in the United States on the basis of census results) | Synonyms: reallotment, reapportionment |
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| (noun) a share that has been allocated again | - |
| reallotment | (noun) a new apportionment (especially a new apportionment of congressional seats in the United States on the basis of census results) | Synonyms: reallocation, reapportionment |
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| realm | (noun) a knowledge domain that you are interested in or are communicating about | Synonyms: region |
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| (noun) the domain ruled by a king or queen | Synonyms: kingdom |
| (noun) a domain in which something is dominant | Synonyms: kingdom, land |
| realness | (noun) the state of being actual or real | Synonyms: realism, reality |
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| realpolitik | (noun) politics based on practical rather than moral or ideological considerations | Synonyms: practical politics |
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| realty | (noun) property consisting of houses and land | Synonyms: immovable, real estate, real property |
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| ream | (noun) a quantity of paper; 480 or 500 sheets; one ream equals 20 quires | - |
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| (noun) a large quantity of written matter | - |
| reamer | (noun) a drill that is used to shape or enlarge holes | - |
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| (noun) a squeezer with a conical ridged center that is used for squeezing juice from citrus fruit | Synonyms: juice reamer, juicer |
| reaper | (noun) farm machine that gathers a food crop from the fields | Synonyms: harvester |
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| (noun) someone who helps to gather the harvest | Synonyms: harvester |
| reappearance | (noun) the act of someone appearing again | Synonyms: return |
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| (noun) the event of something appearing again | - |
| 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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| reappraisal | (noun) a new appraisal or evaluation | Synonyms: reassessment, revaluation, review |
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| rear | (noun) the side that goes last or is not normally seen | Synonyms: back |
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| (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
| (noun) the back of a military formation or procession | - |
| (noun) the side of an object that is opposite its front | Synonyms: back end, backside |
| (noun) the part of something that is furthest from the normal viewer | Synonyms: back |
| rearguard | (noun) a detachment assigned to protect the rear of a (retreating) military body | - |
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