| rosiness | (noun) a healthy reddish complexion | Synonyms: ruddiness |
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| (noun) a dusty pink color | Synonyms: rose |
| (noun) a rosy color (especially in the cheeks) taken as a sign of good health | Synonyms: bloom, blush, flush |
| rosinweed | (noun) North American perennial having a resinous odor and yellow flowers | Synonyms: Silphium laciniatum |
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| (noun) any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock | Synonyms: gum plant, gumweed, tarweed |
| rosita | (noun) erect plant with small clusters of pink trumpet-shaped flowers of southwestern United States | Synonyms: Centaurium calycosum |
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| roster | (noun) a list of names | Synonyms: roll |
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| rostrate | (adjective) having a beak or beaklike snout or proboscis | - |
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| rostrum | (noun) beaklike projection of the anterior part of the head of certain insects such as e.g. weevils | Synonyms: snout |
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| (noun) a platform raised above the surrounding level to give prominence to the person on it | Synonyms: ambo, dais, podium, pulpit, soapbox, stump |
| rosy | (adjective) presaging good fortune | Synonyms: fortunate |
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| (adjective) of blush color | Synonyms: blushful |
| (adjective) having the pinkish flush of health | Synonyms: flushed, rose-cheeked, rosy-cheeked |
| (adjective) reflecting optimism | Synonyms: rose-colored |
| rot | (noun) unacceptable behavior (especially ludicrously false statements) | Synonyms: buncombe, bunk, bunkum, guff, hogwash |
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| (noun) (biology) the process of decay caused by bacterial or fungal action | Synonyms: breakdown, decomposition, putrefaction, rotting |
| (noun) a state of decay usually accompanied by an offensive odor | Synonyms: putrefaction |
| (verb) become physically weaker | Synonyms: waste |
| (verb) break down | Synonyms: decompose, molder, moulder |
| rota | (noun) a roster of names showing the order in which people should perform certain duties | - |
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| rotary | (adjective) relating to or characterized by rotation | - |
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| (adjective) describing a circle; moving in a circle | Synonyms: circular, orbitual |
| (noun) a road junction at which traffic streams circularly around a central island | Synonyms: circle, roundabout, traffic circle |
| (noun) electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa | Synonyms: rotary converter, synchronous converter |
| rotatable | (adjective) capable of being rotated | - |
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| rotate | (verb) plant or grow in a fixed cyclic order of succession | - |
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| (verb) perform a job or duty on a rotating basis | - |
| (verb) cause to turn on an axis or center | Synonyms: circumvolve |
| (verb) turn on or around an axis or a center | Synonyms: go around, revolve |
| (verb) turn outward | Synonyms: splay, spread out, turn out |
| (verb) exchange on a regular basis | - |
| rotated | (adjective) turned in a circle around an axis | Synonyms: revolved |
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| rotation | (noun) the act of rotating as if on an axis | Synonyms: rotary motion |
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| (noun) a planned recurrent sequence (of crops or personnel etc.) | - |
| (noun) a single complete turn (axial or orbital) | Synonyms: gyration, revolution |
| (noun) (mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the origin | - |
| rotational | (adjective) of or pertaining to rotation | - |
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| rotationally | (adverb) in a rotational manner | - |
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| rotatory | (adjective) of or relating to or characteristic or causing an axial or orbital turn | Synonyms: revolutionary |
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| rotavirus | (noun) the reovirus causing infant enteritis | - |
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| rote | (noun) memorization by repetition | Synonyms: rote learning |
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| rotenone | (noun) a white crystalline insecticide that has low toxicity for mammals; is used in home gardens; extracted from the roots of derris and cube | - |
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| rotgut | (noun) any alcoholic beverage of inferior quality | - |
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| rotifer | (noun) minute aquatic multicellular organisms having a ciliated wheel-like organ for feeding and locomotion; constituents of freshwater plankton | - |
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| rotisserie | (noun) a restaurant that specializes in roasted and barbecued meats | - |
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| (noun) an oven or broiler equipped with a rotating spit on which meat cooks as it turns | - |
| rotl | (noun) a unit of weight used in some Muslim countries near the Mediterranean; varies between one and five pounds | - |
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| rotogravure | (noun) using photography to produce a plate for printing | Synonyms: photogravure |
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| (noun) printing by transferring an image from a photogravure plate to a cylinder in a rotary press | - |
| (noun) printed material (text and pictures) produced by an intaglio printing process in a rotary press | - |
| rotor | (noun) rotating mechanism consisting of an assembly of rotating airfoils | - |
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| (noun) the rotating armature of a motor or generator | Synonyms: rotor coil |
| (noun) the revolving bar of a distributor | - |
| rotted | (adjective) damaged by decay; hence unsound and useless | Synonyms: decayed, rotten |
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| rotten | (adjective) having decayed or disintegrated; usually implies foulness | - |
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| (adjective) damaged by decay; hence unsound and useless | Synonyms: decayed, rotted |
| (adjective) very bad | Synonyms: crappy, icky, lousy, shitty, stinking, stinky |
| rottenly | (adverb) in a terrible manner | Synonyms: abominably, abysmally, atrociously, awfully, terribly |
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| rottenness | (noun) the quality of rotting and becoming putrid | Synonyms: putrescence |
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| (noun) in a state of progressive putrefaction | Synonyms: corruption, putrescence, putridness |
| rottenstone | (noun) a weathered and decomposed siliceous limestone; in powdered form it is used in polishing | Synonyms: tripoli |
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| rotter | (noun) a person who is deemed to be despicable or contemptible | Synonyms: bum, crumb, dirty dog, git, lowlife, puke, rat, scum bag, scumbag, skunk, so-and-so, stinker, stinkpot |
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| rotting | (noun) (biology) the process of decay caused by bacterial or fungal action | Synonyms: breakdown, decomposition, putrefaction, rot |
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| rotund | (adjective) excessively fat | Synonyms: corpulent, obese, weighty |
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| (adjective) (of sounds) full and rich | Synonyms: orotund, pear-shaped, round |
| (adjective) spherical in shape | - |
| rotunda | (noun) a large circular room | - |
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| (noun) a building having a circular plan and a dome | - |
| rotundity | (noun) the roundness of a 3-dimensional object | Synonyms: globosity, globularness, rotundness, sphericalness, sphericity |
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| (noun) the fullness of a tone of voice | Synonyms: roundness |
| rotundly | (adverb) in a sonorous manner | Synonyms: sonorously |
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| rotundness | (noun) the roundness of a 3-dimensional object | Synonyms: globosity, globularness, rotundity, sphericalness, sphericity |
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| rouble | (noun) the basic unit of money in Russia | Synonyms: ruble |
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| roue | (noun) a dissolute man in fashionable society | Synonyms: blood, profligate, rake, rakehell, rip |
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| rouge | (noun) makeup consisting of a pink or red powder applied to the cheeks | Synonyms: blush, blusher, paint |
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| (verb) redden by applying rouge to | - |
| rougeberry | (noun) bushy houseplant having white to pale pink flowers followed by racemes of scarlet berries; tropical Americas | Synonyms: blood berry, bloodberry, Rivina humilis, rouge plant |
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| rouged | (adjective) marked by the use of various kinds of red makeup | - |
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| rough | (adjective) having or caused by an irregular surface | Synonyms: unsmooth |
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| (adjective) of the margin of a leaf shape; having the edge cut or fringed or scalloped | - |
| (adjective) causing or characterized by jolts and irregular movements | Synonyms: bumpy, jolting, jolty, jumpy, rocky |
| (adjective) not shaped by cutting or trimming | Synonyms: uncut |
| (adjective) ready and able to resort to force or violence | Synonyms: pugnacious |
| (adjective) unpleasantly harsh or grating in sound | Synonyms: grating, gravelly, rasping, raspy, scratchy |
| (adjective) full of hardship or trials | Synonyms: rocky |
| (adjective) not quite exact or correct | Synonyms: approximate, approximative |
| (adjective) violently agitated and turbulent | Synonyms: boisterous, fierce |
| (adjective) unkind or cruel or uncivil | Synonyms: harsh |
| (adjective) unpleasantly stern | Synonyms: harsh |
| (adjective) not perfected | - |
| (adjective) (of persons or behavior) lacking refinement or finesse | - |
| (adjective) not carefully or expertly made | Synonyms: crude |
| (noun) the part of a golf course bordering the fairway where the grass is not cut short | - |
| (adverb) with rough motion as over a rough surface | Synonyms: roughly |
| (adverb) with roughness or violence (`rough' is an informal variant for `roughly') | Synonyms: roughly |
| (verb) prepare in preliminary or sketchy form | Synonyms: rough in, rough out |
| roughage | (noun) coarse, indigestible plant food low in nutrients; its bulk stimulates intestinal peristalsis | Synonyms: fiber, fibre |
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| roughcast | (noun) a rough preliminary model | - |
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| (noun) a coarse plaster for the surface of external walls | - |
| (verb) hew roughly, without finishing the surface | Synonyms: rough-hew |
| (verb) apply roughcast to | - |
| (verb) shape roughly | - |
| roughdried | (adjective) (of laundry) dried but not ironed | - |
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| roughen | (verb) make rough or rougher | - |
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| roughened | (adjective) used of skin roughened as a result of cold or exposure | Synonyms: chapped, cracked |
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| roughhewn | (adjective) of stone or timber; shaped roughly without finishing | Synonyms: rough-cut |
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| roughhouse | (verb) engage in rough or disorderly play | - |
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| roughish | (adjective) somewhat rough | - |
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| roughleg | (noun) large hawk of the Northern Hemisphere that feeds chiefly on small rodents and is beneficial to farmers | Synonyms: Buteo lagopus, rough-legged hawk |
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| roughly | (adverb) (of quantities) imprecise but fairly close to correct | Synonyms: about, approximately, around, close to, just about, more or less, or so, some |
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| (adverb) with rough motion as over a rough surface | Synonyms: rough |
| (adverb) with roughness or violence (`rough' is an informal variant for `roughly') | Synonyms: rough |
| roughneck | (noun) a cruel and brutal fellow | Synonyms: bully, hooligan, rowdy, ruffian, tough, yob, yobbo, yobo |
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| roughness | (noun) harsh or severe speech or behavior | - |
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| (noun) a texture of a surface or edge that is not smooth but is irregular and uneven | Synonyms: raggedness |
| (noun) the quality of being harsh or rough or grating to the senses | Synonyms: harshness |
| (noun) an unpolished unrefined quality | Synonyms: crudeness |
| (noun) the formation of small pits in a surface as a consequence of corrosion | Synonyms: indentation, pitting |
| (noun) used of the sea during inclement or stormy weather | Synonyms: choppiness, rough water |
| (noun) rowdy behavior | Synonyms: disorderliness, rowdiness, rowdyism |
| roughrider | (noun) a horseman skilled at breaking wild horses to the saddle | - |
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| roughshod | (adjective) unjustly domineering | Synonyms: heavy-handed |
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| (adjective) (of persons or their actions) able or disposed to inflict pain or suffering | Synonyms: barbarous, brutal, cruel, fell, savage, vicious |
| (adjective) (of a horse) having horseshoes with projecting nails to prevent slipping | - |
| roulade | (noun) (music) an elaborate run of several notes sung to one syllable | - |
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| (noun) a dish consisting of a slice of meat that is rolled around a filling and cooked | - |
| rouleau | (noun) a roll of coins wrapped in paper | - |
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| (noun) a roll of ribbon | - |
| roulette | (noun) a gambling game in which players bet on which compartment of a revolving wheel a small ball will come to rest in | - |
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| (noun) a wheel with teeth for making a row of perforations | Synonyms: toothed wheel |
| (noun) a line generated by a point on one figure rolling around a second figure | Synonyms: line roulette |
| round | (adjective) having the shape or form of a circle | Synonyms: circular |
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| (adjective) (of sounds) full and rich | Synonyms: orotund, pear-shaped, rotund |
| (adjective) (mathematics) expressed to the nearest integer, ten, hundred, or thousand | - |
| (noun) (often plural) a series of professional calls (usually in a set order) | - |
| (noun) the usual activities in your day | Synonyms: daily round |
| (noun) the activity of playing 18 holes of golf | Synonyms: round of golf |
| (noun) any circular or rotating mechanism | Synonyms: circle |
| (noun) a charge of ammunition for a single shot | Synonyms: one shot, unit of ammunition |
| (noun) a crosspiece between the legs of a chair | Synonyms: rung, stave |
| (noun) a partsong in which voices follow each other; one voice starts and others join in one after another until all are singing different parts of the song at the same time | Synonyms: troll |
| (noun) an outburst of applause | - |
| (noun) a cut of beef between the rump and the lower leg | - |
| (noun) a serving to each of a group (usually alcoholic) | Synonyms: round of drinks |
| (noun) a regular route for a sentry or policeman | Synonyms: beat |
| (noun) the course along which communications spread | - |
| (noun) (sports) a division of a game during which one team is on the offensive | Synonyms: bout, turn |
| (noun) an interval during which a recurring sequence of events occurs | Synonyms: cycle, rhythm |
| (adverb) from beginning to end; throughout | Synonyms: around |
| (verb) become round, plump, or shapely | Synonyms: fill out, flesh out |
| (verb) make round | Synonyms: round off, round out |
| (verb) bring to a highly developed, finished, or refined state | Synonyms: brush up, polish, polish up, round off |
| (verb) express as a round number | Synonyms: round down, round off, round out |
| (verb) pronounce with rounded lips | Synonyms: labialise, labialize |
| (verb) attack in speech or writing | Synonyms: assail, assault, attack, lash out, snipe |
| (verb) wind around; move along a circular course | - |
| roundabout | (adjective) deviating from a straight course | Synonyms: circuitous, devious |
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| (adjective) marked by obliqueness or indirection in speech or conduct | Synonyms: circuitous |
| (noun) a road junction at which traffic streams circularly around a central island | Synonyms: circle, rotary, traffic circle |
| (noun) a large, rotating machine with seats for children to ride on for amusement | Synonyms: carousel, carrousel, merry-go-round, whirligig |
| rounded | (adjective) curving and somewhat round in shape rather than jagged | - |
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| roundedness | (noun) the property possessed by a rounded convexity | Synonyms: bulginess |
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| roundel | (noun) round piece of armor plate that protects the armpit | - |
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| (noun) (heraldry) a charge in the shape of a filled circle | - |
| (noun) English form of rondeau having three triplets with a refrain after the first and third | - |
| roundelay | (noun) a song in which a line or phrase is repeated as the refrain | - |
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| rounder | (noun) a tool for rounding corners or edges | - |
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| (noun) a dissolute person; usually a man who is morally unrestrained | Synonyms: debauchee, libertine |
| rounders | (noun) an English ball game similar to baseball | - |
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| roundhead | (noun) a brachycephalic person | - |
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| roundheaded | (adjective) having a brachycephalic head | Synonyms: broad-headed, short-headed |
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| roundhouse | (noun) a hook delivered with an exaggerated swing | - |
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| (noun) workplace consisting of a circular building for repairing locomotives | - |
| rounding | (noun) (mathematics) a miscalculation that results from rounding off numbers to a convenient number of decimals | Synonyms: rounding error |
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| roundish | (adjective) somewhat round in appearance or form | - |
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| roundly | (adverb) in a round manner | - |
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| (adverb) in a blunt direct manner | Synonyms: bluffly, bluntly, brusquely, flat out |
| roundness | (noun) the property possessed by a line or surface that is curved and not angular | - |
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| (noun) the bodily property of being well rounded | Synonyms: embonpoint, plumpness |
| (noun) the quality of being round numbers | - |
| (noun) the fullness of a tone of voice | Synonyms: rotundity |
| roundsman | (noun) a workman employed to make rounds (to deliver goods or make inspections or so on) | - |
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| roundtable | (noun) a meeting of peers for discussion and exchange of views | Synonyms: round-table conference, round table |
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| roundup | (noun) the systematic gathering up of suspects by the police | - |
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| (noun) the activity of gathering livestock together so that they can be counted or branded or sold | - |
| (noun) a summary list; as in e.g. "a news roundup" | - |
| roundworm | (noun) unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic | Synonyms: nematode, nematode worm |
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| (noun) infections of the skin or nails caused by fungi and appearing as itching circular patches | Synonyms: ringworm, tinea |
| rouse | (verb) cause to become awake or conscious | Synonyms: arouse, awaken, wake, wake up, waken |
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| (verb) cause to be agitated, excited, or roused | Synonyms: agitate, charge, charge up, commove, excite, turn on |
| (verb) force or drive out | Synonyms: drive out, force out, rout out |
| (verb) become active | Synonyms: bestir |
| rouser | (noun) someone who rouses others from sleep | Synonyms: arouser, waker |
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| rousing | (adjective) rousing to activity or heightened action as by spurring or goading | - |
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| (adjective) capable of arousing enthusiasm or excitement | Synonyms: stirring |
| (noun) the act of arousing | Synonyms: arousal |
| roustabout | (noun) a member of a ship's crew who performs manual labor | Synonyms: deckhand |
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| rout | (noun) an overwhelming defeat | - |
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| (noun) a disorderly crowd of people | Synonyms: mob, rabble |
| (verb) cause to flee | Synonyms: expel, rout out |
| (verb) defeat disastrously | Synonyms: spread-eagle, spreadeagle |
| (verb) make a groove in | Synonyms: gouge |
| (verb) dig with the snout | Synonyms: root, rootle |
| route | (noun) an open way (generally public) for travel or transportation | Synonyms: road |
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| (noun) an established line of travel or access | Synonyms: itinerary, path |
| (verb) send via a specific route | - |
| (verb) divert in a specified direction | - |
| (verb) send documents or materials to appropriate destinations | - |
| routemarch | (noun) a long training march for troops | - |
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| router | (noun) (computer science) a device that forwards data packets between computer networks | - |
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| (noun) a worker who routes shipments for distribution and delivery | - |
| (noun) a power tool with a shaped cutter; used in carpentry for cutting grooves | - |
| routine | (adjective) found in the ordinary course of events | Synonyms: everyday, mundane, quotidian, unremarkable, workaday |
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| (noun) an unvarying or habitual method or procedure | Synonyms: modus operandi |
| (noun) a set sequence of steps, part of larger computer program | Synonyms: function, procedure, subprogram, subroutine |
| (noun) a short performance that is part of a longer program | Synonyms: act, bit, number, turn |
| routinely | (adverb) according to routine or established practice | - |
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| routineness | (noun) The state or quality of being routine, of possessing the traits of being quotidian, and repeating a pattern regularly. | - |
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| roux | (noun) a mixture of fat and flour heated and used as a basis for sauces | - |
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| rove | (verb) move about aimlessly or without any destination, often in search of food or employment | Synonyms: cast, drift, ramble, range, roam, roll, stray, swan, tramp, vagabond, wander |
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| rover | (noun) someone who leads a wandering unsettled life | Synonyms: bird of passage, roamer, wanderer |
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| (noun) an adult member of the Boy Scouts movement | Synonyms: scouter |
| roving | (adjective) migratory | Synonyms: mobile, nomadic, peregrine, wandering |
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| (noun) travelling about without any clear destination | Synonyms: vagabondage, wandering |
| row | (noun) the act of rowing as a sport | Synonyms: rowing |
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| (noun) (construction) a layer of masonry | Synonyms: course |
| (noun) a continuous chronological succession without an interruption | - |
| (noun) an arrangement of objects or people side by side in a line | - |
| (noun) a linear array of numbers, letters, or symbols side by side | - |
| (noun) a long continuous strip (usually running horizontally) | - |
| (noun) an angry dispute | Synonyms: dustup, quarrel, run-in, words, wrangle |
| (verb) propel with oars | - |
| rowan | (noun) Eurasian tree with orange-red berrylike fruits | Synonyms: European mountain ash, rowan tree, Sorbus aucuparia |
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| rowanberry | (noun) decorative red berrylike fruit of a rowan tree | - |
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| rowboat | (noun) a small boat of shallow draft with cross thwarts for seats and rowlocks for oars with which it is propelled | Synonyms: dinghy, dory |
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| rowdily | (adverb) in a rowdy manner | Synonyms: raucously |
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