| radix | (noun) (numeration system) the positive integer that is equivalent to one in the next higher counting place | Synonyms: base |
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| radome | (noun) a housing for a radar antenna; transparent to radio waves | Synonyms: radar dome |
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| radon | (noun) a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health | Synonyms: atomic number 86, Rn |
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| raetam | (noun) desert shrub of Syria and Arabia having small white flowers; constitutes the juniper of the Old Testament; sometimes placed in genus Genista | Synonyms: Genista raetam, juniper, juniper bush, Retama raetam, retem |
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| raffia | (noun) fiber of a raffia palm used as light cordage and in making hats and baskets | - |
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| (noun) leaf fibers of the raffia palm tree; used to make baskets and mats etc. | Synonyms: raphia |
| raffinose | (noun) a trisaccharide that occurs in sugar beets and cotton seeds and certain cereals | - |
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| raffle | (noun) a lottery in which the prizes are goods rather than money | - |
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| raft | (noun) a flat float (usually made of logs or planks) that can be used for transport or as a platform for swimmers | - |
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| (noun) a foundation (usually on soft ground) consisting of an extended layer of reinforced concrete | Synonyms: mat, raft foundation |
| (noun) (often followed by `of') a large number or amount or extent | Synonyms: batch, deal, flock, good deal, great deal, hatful, heap, lot, mass, mess, mickle, mint, mountain, muckle, passel, peck, pile, plenty, pot, quite a little, sight, slew, spate, stack, tidy sum, wad |
| rafter | (noun) one of several parallel sloping beams that support a roof | Synonyms: balk, baulk |
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| (noun) someone who travels by raft | Synonyms: raftman, raftsman |
| raftman | (noun) someone who travels by raft | Synonyms: rafter, raftsman |
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| rafts | (noun) a large number or amount | Synonyms: dozens, gobs, heaps, lashings, loads, lots, oodles, piles, scads, scores, slews, stacks, tons, wads |
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| raftsman | (noun) someone who travels by raft | Synonyms: rafter, raftman |
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| rag | (noun) a boisterous practical joke (especially by college students) | - |
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| (noun) a small piece of cloth | Synonyms: shred, tag, tag end, tatter |
| (noun) newspaper with half-size pages | Synonyms: sheet, tabloid |
| (noun) music with a syncopated melody (usually for the piano) | Synonyms: ragtime |
| (noun) a week at British universities during which side-shows and processions of floats are organized to raise money for charities | Synonyms: rag week |
| ragamuffin | (noun) a dirty shabbily clothed urchin | Synonyms: tatterdemalion |
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| ragbag | (noun) a bag in which rags are kept | - |
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| (noun) a motley assortment of things | Synonyms: farrago, gallimaufry, hodgepodge, hotchpotch, melange, mingle-mangle, mishmash, oddments, odds and ends, omnium-gatherum |
| rage | (noun) an interest followed with exaggerated zeal | Synonyms: craze, cult, fad, furor, furore |
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| (noun) a feeling of intense anger | Synonyms: fury, madness |
| (noun) a state of extreme anger | - |
| (noun) violent state of the elements | - |
| (noun) something that is desired intensely | Synonyms: passion |
| ragee | (noun) East Indian cereal grass whose seed yield a somewhat bitter flour, a staple in the Orient | Synonyms: African millet, coracan, corakan, Eleusine coracana, finger millet, kurakkan, ragi |
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| raggedness | (noun) shabbiness by virtue of being in rags | - |
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| (noun) a texture of a surface or edge that is not smooth but is irregular and uneven | Synonyms: roughness |
| ragi | (noun) East Indian cereal grass whose seed yield a somewhat bitter flour, a staple in the Orient | Synonyms: African millet, coracan, corakan, Eleusine coracana, finger millet, kurakkan, ragee |
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| raglan | (noun) a garment (coat or sweater) that has raglan sleeves | - |
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| ragout | (noun) well-seasoned stew of meat and vegetables | - |
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| ragpicker | (noun) an unskilled person who picks up rags from trash cans and public dumps as a means of livelihood | - |
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| ragsorter | (noun) a worker who sorts rags and old clothing for new uses (as in papermaking) | - |
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| ragtag | (noun) disparaging terms for the common people | Synonyms: rabble, ragtag and bobtail, riffraff |
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| ragtime | (noun) music with a syncopated melody (usually for the piano) | Synonyms: rag |
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| ragweed | (noun) any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma | Synonyms: ambrosia, bitterweed |
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| (noun) widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity | Synonyms: benweed, ragwort, Senecio jacobaea, tansy ragwort |
| 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 |
| raid | (noun) a sudden short attack | Synonyms: foray, maraud |
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| (noun) an attempt by speculators to defraud investors | - |
| raider | (noun) a corporate investor who intends to take over a company by buying a controlling interest in its stock and installing new management | - |
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| (noun) someone who takes spoils or plunder (as in war) | Synonyms: despoiler, freebooter, looter, pillager, plunderer, spoiler |
| rail | (noun) any of numerous widely distributed small wading birds of the family Rallidae having short wings and very long toes for running on soft mud | - |
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| (noun) a horizontal bar (usually of wood or metal) | - |
| (noun) a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll | Synonyms: rails, runway, track |
| (noun) a barrier consisting of a horizontal bar and supports | Synonyms: railing |
| (noun) short for railway | - |
| railbird | (noun) a fan of racing who watches races from the outer rail of the track | - |
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| railcar | (noun) a wheeled vehicle adapted to the rails of railroad | Synonyms: car, railroad car, railway car |
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| railhead | (noun) a railroad depot in a theater of operations where military supplies are unloaded for distribution | - |
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| (noun) the end of the completed track on an unfinished railway | - |
| railing | (noun) a barrier consisting of a horizontal bar and supports | Synonyms: rail |
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| (noun) material for making rails or rails collectively | - |
| raillery | (noun) light teasing repartee | Synonyms: backchat, banter, give-and-take |
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| railroad | (noun) line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight | Synonyms: railroad line, railway, railway line, railway system |
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| (noun) a line of track providing a runway for wheels | Synonyms: railroad track, railway |
| railroader | (noun) an employee of a railroad | Synonyms: railroad man, railway man, railwayman, trainman |
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| railroading | (noun) the activity of designing and constructing and operating railroads | Synonyms: rail technology |
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| rails | (noun) a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll | Synonyms: rail, runway, track |
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| railway | (noun) line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight | Synonyms: railroad, railroad line, railway line, railway system |
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| (noun) a line of track providing a runway for wheels | Synonyms: railroad, railroad track |
| railwayman | (noun) an employee of a railroad | Synonyms: railroad man, railroader, railway man, trainman |
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| railyard | (noun) an area having a network of railway tracks and sidings for storage and maintenance of cars and engines | Synonyms: railway yard, yard |
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| raiment | (noun) especially fine or decorative clothing | Synonyms: array, regalia |
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| rain | (noun) anything happening rapidly or in quick successive | Synonyms: pelting |
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| (noun) water falling in drops from vapor condensed in the atmosphere | Synonyms: rainfall |
| (noun) drops of fresh water that fall as precipitation from clouds | Synonyms: rainwater |
| rainbow | (noun) an illusory hope | - |
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| (noun) an arc of colored light in the sky caused by refraction of the sun's rays by rain | - |
| raincoat | (noun) a water-resistant coat | Synonyms: waterproof |
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| raindrop | (noun) a drop of rain | - |
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| rainfall | (noun) water falling in drops from vapor condensed in the atmosphere | Synonyms: rain |
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| rainfly | (noun) flap consisting of a piece of canvas that can be drawn back to provide entrance to a tent | Synonyms: fly, fly sheet, tent-fly, tent flap |
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| rainforest | (noun) a forest with heavy annual rainfall | Synonyms: rain forest |
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| raininess | (noun) (of weather) the badness of the weather | Synonyms: foulness |
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| rainlessness | (noun) The state or condition of being rainless; lack of rain; drought. | - |
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| rainmaker | (noun) American Indian medicine man who attempt to make it rain | - |
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| (noun) executive who is very successful in bringing in business to his company or firm | - |
| rainmaking | (noun) activity intended to produce rain | - |
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| rainstorm | (noun) a storm with rain | - |
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| rainwater | (noun) drops of fresh water that fall as precipitation from clouds | Synonyms: rain |
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| raise | (noun) the act of raising something | Synonyms: heave, lift |
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| (noun) increasing the size of a bet (as in poker) | - |
| (noun) the amount a salary is increased | Synonyms: hike, rise, salary increase, wage hike, wage increase |
| (noun) an upward slope or grade (as in a road) | Synonyms: acclivity, ascent, climb, rise, upgrade |
| raiser | (noun) someone concerned with the science or art or business of cultivating the soil | Synonyms: agriculturalist, agriculturist, cultivator, grower |
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| (noun) a bridge partner who increases the partner's bid | - |
| raisin | (noun) dried grape | - |
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| raising | (noun) helping someone grow up to be an accepted member of the community | Synonyms: breeding, bringing up, fosterage, fostering, nurture, rearing, upbringing |
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| (noun) the properties acquired as a consequence of the way you were treated as a child | Synonyms: nurture, rearing |
| (noun) the event of something being raised upward | Synonyms: elevation, lift |
| raita | (noun) an Indian side dish of yogurt and chopped cucumbers and spices | - |
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| raj | (noun) British dominion over India (1757-1947) | - |
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| raja | (noun) a prince or king in India | Synonyms: rajah |
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| rajah | (noun) a prince or king in India | Synonyms: raja |
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| rajanya | (noun) the second highest of the four varnas: the noble or warrior category | - |
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| rake | (noun) a long-handled tool with a row of teeth at its head; used to move leaves or loosen soil | - |
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| (noun) degree of deviation from a horizontal plane | Synonyms: pitch, slant |
| (noun) a dissolute man in fashionable society | Synonyms: blood, profligate, rakehell, rip, roue |
| rakehell | (noun) a dissolute man in fashionable society | Synonyms: blood, profligate, rake, rip, roue |
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| rakishness | (noun) stylishness as evidenced by a smart appearance | Synonyms: dapperness, jauntiness, nattiness |
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| (noun) the quality of a rake | - |
| rale | (noun) a rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders) | Synonyms: rattle, rattling |
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| rally | (noun) (sports) an unbroken sequence of several successive strokes | Synonyms: exchange |
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| (noun) the feat of mustering strength for a renewed effort | Synonyms: rallying |
| (noun) an automobile race run over public roads | - |
| (noun) a large gathering of people intended to arouse enthusiasm | Synonyms: mass meeting |
| (noun) a marked recovery of strength or spirits during an illness | - |
| rallying | (noun) the act of mobilizing for a common purpose | - |
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| (noun) the feat of mustering strength for a renewed effort | Synonyms: rally |
| ram | (noun) uncastrated adult male sheep | Synonyms: tup |
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| (noun) a tool for driving or forcing something by impact | - |
| ramble | (noun) an aimless amble on a winding course | Synonyms: meander |
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| rambler | (noun) a person who takes long walks in the country | - |
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| (noun) a person whose speech or writing is not well organized | - |
| rambotan | (noun) pleasantly acid bright red oval Malayan fruit covered with soft spines | Synonyms: rambutan |
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| (noun) Malayan tree bearing spiny red fruit | Synonyms: Nephelium lappaceum, rambutan, rambutan tree |
| rambutan | (noun) pleasantly acid bright red oval Malayan fruit covered with soft spines | Synonyms: rambotan |
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| (noun) Malayan tree bearing spiny red fruit | Synonyms: Nephelium lappaceum, rambotan, rambutan tree |
| ramee | (noun) tall perennial herb of tropical Asia with dark green leaves; cultivated for the fiber from its woody stems that resembles flax | Synonyms: Boehmeria nivea, China grass, Chinese silk plant, ramie |
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| ramekin | (noun) a small fireproof dish used for baking and serving individual portions | Synonyms: ramequin |
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| (noun) a cheese dish made with egg and bread crumbs that is baked and served in individual fireproof dishes | Synonyms: ramequin |
| ramequin | (noun) a small fireproof dish used for baking and serving individual portions | Synonyms: ramekin |
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| (noun) a cheese dish made with egg and bread crumbs that is baked and served in individual fireproof dishes | Synonyms: ramekin |
| ramie | (noun) tall perennial herb of tropical Asia with dark green leaves; cultivated for the fiber from its woody stems that resembles flax | Synonyms: Boehmeria nivea, China grass, Chinese silk plant, ramee |
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| ramification | (noun) the act of branching out or dividing into branches | Synonyms: branching, fork, forking |
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| (noun) an arrangement of branching parts | - |
| (noun) a development that complicates a situation | Synonyms: complication |
| (noun) a part of a forked or branching shape | Synonyms: branch, leg |
| ramipril | (noun) an ACE inhibitor (trade name Altace) used to treat high blood pressure or in some patients who have had a heart attack | Synonyms: Altace |
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| ramjet | (noun) a simple type of jet engine; must be launched at high speed | Synonyms: atherodyde, athodyd, flying drainpipe, ramjet engine |
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| rammer | (noun) a tool for driving something with force | - |
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| ramona | (noun) shrubby plant with aromatic greyish-green leaves used as a cooking herb | Synonyms: common sage, Salvia officinalis |
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| ramontchi | (noun) small shrubby tree of Madagascar cultivated in tropical regions as a hedge plant and for its deep red acid fruits resembling small plums | Synonyms: batoko palm, Flacourtia indica, governor's plum, governor plum, Madagascar plum |
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| ramp | (noun) an inclined surface connecting two levels | Synonyms: incline |
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| (noun) a movable staircase that passengers use to board or leave an aircraft | - |
| (noun) North American perennial having a slender bulb and whitish flowers | Synonyms: Allium tricoccum, wild leek |
| rampage | (noun) violently angry and destructive behavior | Synonyms: violent disorder |
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| rampart | (noun) an embankment built around a space for defensive purposes | Synonyms: bulwark, wall |
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| rampion | (noun) bellflower of Europe and Asia and North Africa having bluish flowers and an edible tuberous root used with the leaves in salad | Synonyms: Campanula rapunculus, rampion bellflower |
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| ramrod | (noun) a rod used to ram the charge into a muzzle-loading firearm | - |
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| (noun) a rod used to clean the barrel of a firearm | - |
| (noun) a harshly demanding overseer | - |
| ramus | (noun) the posterior part of the mandible that is more or less vertical | - |
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| ranch | (noun) farm consisting of a large tract of land along with facilities needed to raise livestock (especially cattle) | Synonyms: cattle farm, cattle ranch, spread |
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| rancher | (noun) a person who owns or operates a ranch | - |
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| ranching | (noun) farming for the raising of livestock (particularly cattle) | - |
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| rancidity | (noun) the state of being rancid; having a rancid scent or flavor (as of old cooking oil) | - |
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| rancidness | (noun) the property of being rancid | - |
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| rancor | (noun) a feeling of deep and bitter anger and ill-will | Synonyms: bitterness, gall, rancour, resentment |
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| rancour | (noun) a feeling of deep and bitter anger and ill-will | Synonyms: bitterness, gall, rancor, resentment |
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| rand | (noun) the basic unit of money in South Africa; equal to 100 cents | - |
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