| roach | (noun) any of numerous chiefly nocturnal insects; some are domestic pests | Synonyms: cockroach |
|---|
| (noun) European freshwater food fish having a greenish back | Synonyms: Rutilus rutilus |
| (noun) the butt of a marijuana cigarette | - |
| (noun) street names for flunitrazepam | Synonyms: circle, forget me drug, Mexican valium, R-2, roofy, rope, rophy |
| (noun) a roll of hair brushed back from the forehead | - |
| road | (noun) a way or means to achieve something | - |
|---|
| (noun) an open way (generally public) for travel or transportation | Synonyms: route |
| roadbed | (noun) a bed supporting a road | - |
|---|
| roadblock | (noun) a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc. | Synonyms: barricade |
|---|
| (noun) any condition that makes it difficult to make progress or to achieve an objective | Synonyms: barrier |
| roadbook | (noun) a guidebook describing the roads of a country; contains maps and (sometimes) a gazetteer | - |
|---|
| roadhog | (noun) a driver who obstructs others | Synonyms: road hog |
|---|
| roadhouse | (noun) an inn (usually outside city limits on a main road) providing meals and liquor and dancing and (sometimes) gambling | - |
|---|
| roadkill | (noun) the dead body of an animal that has been killed on a road by a vehicle | - |
|---|
| roadman | (noun) a salesman who travels to call on customers | Synonyms: bagman, commercial traveler, commercial traveller, traveling salesman, travelling salesman |
|---|
| (noun) a workman who is employed to repair roads | Synonyms: road mender |
| roadrunner | (noun) speedy largely terrestrial bird found from California and Mexico to Texas | Synonyms: chaparral cock, Geococcyx californianus |
|---|
| roads | (noun) a partly sheltered anchorage | Synonyms: roadstead |
|---|
| roadside | (noun) edge of a way or road or path | Synonyms: wayside |
|---|
| roadstead | (noun) a partly sheltered anchorage | Synonyms: roads |
|---|
| roadster | (noun) a small lightweight carriage; drawn by a single horse | Synonyms: buggy |
|---|
| (noun) an open automobile having a front seat and a rumble seat | Synonyms: runabout, two-seater |
| roadway | (noun) a road (especially that part of a road) over which vehicles travel | - |
|---|
| roadworthiness | (noun) (of motor vehicles) the quality of being fit to drive on the open road | - |
|---|
| roamer | (noun) someone who leads a wandering unsettled life | Synonyms: bird of passage, rover, wanderer |
|---|
| roan | (noun) a horse having a brownish coat thickly sprinkled with white or gray | - |
|---|
| (noun) a soft sheepskin leather that is colored and finished to resemble morocco; used in bookbinding | - |
| roar | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellow, bellowing, holla, holler, hollering, hollo, holloa, roaring, yowl |
|---|
| (noun) a deep prolonged loud noise | Synonyms: boom, roaring, thunder |
| (noun) the sound made by a lion | - |
| roarer | (noun) someone who communicates vocally in a very loud voice | Synonyms: bawler, bellower, screamer, screecher, shouter, yeller |
|---|
| roaring | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellow, bellowing, holla, holler, hollering, hollo, holloa, roar, yowl |
|---|
| (noun) a deep prolonged loud noise | Synonyms: boom, roar, thunder |
| roast | (noun) negative criticism | Synonyms: knock |
|---|
| (noun) a piece of meat roasted or for roasting and of a size for slicing into more than one portion | Synonyms: joint |
| roaster | (noun) a special cooking pan for roasting | - |
|---|
| (noun) flesh of a large young chicken over 3 1/2 lb suitable for roasting | - |
| (noun) a cook who roasts food | - |
| (noun) a harsh or humorous critic (sometimes intended as a facetious compliment) | - |
| roasting | (noun) cooking (meat) by dry heat in an oven (usually with fat added) | - |
|---|
| robalo | (noun) a kind of percoid fish | - |
|---|
| robber | (noun) a thief who steals from someone by threatening violence | - |
|---|
| robbery | (noun) larceny by threat of violence | - |
|---|
| (noun) plundering during riots or in wartime | Synonyms: looting |
| robe | (noun) any loose flowing garment | - |
|---|
| (noun) outerwear consisting of a long flowing garment used for official or ceremonial occasions | Synonyms: gown |
| robin | (noun) large American thrush having a rust-red breast and abdomen | Synonyms: American robin, Turdus migratorius |
|---|
| (noun) small Old World songbird with a reddish breast | Synonyms: Erithacus rubecola, Old World robin, redbreast, robin redbreast |
| roble | (noun) tall graceful deciduous California oak having leathery leaves and slender pointed acorns | Synonyms: California white oak, Quercus lobata, valley oak, valley white oak |
|---|
| (noun) large tree of Trinidad and Guyana having odd-pinnate leaves and violet-scented axillary racemes of yellow flowers and long smooth pods; grown as a specimen in parks and large gardens | Synonyms: Platymiscium trinitatis |
| robocall | (noun) An phone call made by an automated service | - |
|---|
| robot | (noun) a mechanism that can move automatically | Synonyms: automaton, golem |
|---|
| robotics | (noun) the area of AI concerned with the practical use of robots | - |
|---|
| robustness | (noun) the property of being strong and healthy in constitution | Synonyms: hardiness, lustiness |
|---|
| (noun) the characteristic of being strong enough to withstand intellectual challenge | - |
| roc | (noun) mythical bird of prey having enormous size and strength | - |
|---|
| rocambole | (noun) European leek cultivated and used like leeks | Synonyms: Allium scorodoprasum, giant garlic, sand leek, Spanish garlic |
|---|
| roccella | (noun) a source of the dye archil and of litmus | Synonyms: Roccella tinctoria |
|---|
| rock | (noun) pitching dangerously to one side | Synonyms: careen, sway, tilt |
|---|
| (noun) a genre of popular music originating in the 1950s; a blend of black rhythm-and-blues with white country-and-western | Synonyms: rock-and-roll, rock'n'roll, rock 'n' roll, rock and roll, rock music |
| (noun) hard bright-colored stick candy (typically flavored with peppermint) | Synonyms: rock candy |
| (noun) a lump or mass of hard consolidated mineral matter | Synonyms: stone |
| (noun) (figurative) someone who is strong and stable and dependable | - |
| (noun) material consisting of the aggregate of minerals like those making up the Earth's crust | Synonyms: stone |
| rockabilly | (noun) a fusion of black music and country music that was popular in the 1950s; sometimes described as blues with a country beat | - |
|---|
| rockchuck | (noun) heavy-bodied yellowish-brown marmot of rocky areas of western North America | Synonyms: Marmota flaviventris, yellowbelly marmot |
|---|
| rockcress | (noun) any of several rock-loving cresses of the genus Arabis | Synonyms: rock cress |
|---|
| (noun) noxious cress with yellow flowers; sometimes placed in genus Sisymbrium | Synonyms: Barbarea vulgaris, rocket cress, Sisymbrium barbarea, yellow rocket |
| rocker | (noun) a curved support that permits the supported object to rock to and fro | - |
|---|
| (noun) a chair mounted on rockers | Synonyms: rocking chair |
| (noun) an ice skate with a curved blade | - |
| (noun) a trough that can be rocked back and forth; used by gold miners to shake auriferous earth in water in order to separate the gold | Synonyms: cradle |
| (noun) a teenager or young adult in the 1960s who wore leather jackets and rode motorcycles | - |
| (noun) a performer or composer or fan of rock music | Synonyms: rock 'n' roll musician |
| (noun) an attendant who rocks a child in a cradle | - |
| rockers | (noun) originally a British youth subculture that evolved out of the teddy boys in the 1960s; wore black leather jackets and jeans and boots; had greased hair and rode motorcycles and listened to rock'n'roll; were largely unskilled manual laborers | Synonyms: bikers |
|---|
| rockery | (noun) a garden featuring rocks; usually alpine plants | Synonyms: rock garden |
|---|
| rocket | (noun) a jet engine containing its own propellant and driven by reaction propulsion | Synonyms: rocket engine |
|---|
| (noun) any vehicle self-propelled by a rocket engine | Synonyms: projectile |
| (noun) sends a firework display high into the sky | Synonyms: skyrocket |
| (noun) propels bright light high in the sky, or used to propel a lifesaving line or harpoon | Synonyms: skyrocket |
| (noun) erect European annual often grown as a salad crop to be harvested when young and tender | Synonyms: arugula, Eruca sativa, Eruca vesicaria sativa, garden rocket, rocket salad, roquette |
| rocketry | (noun) the branch of engineering science that studies rocket design and operation | - |
|---|
| rockfish | (noun) marine food fish found among rocks along the northern coasts of Europe and America | - |
|---|
| (noun) marine food and game fish with dark longitudinal stripes; migrates upriver to spawn; sometimes placed in the genus Morone | Synonyms: Roccus saxatilis, striped bass, striper |
| (noun) the lean flesh of any of various valuable market fish caught among rocks | - |
| rockfoil | (noun) any of various plants of the genus Saxifraga | Synonyms: breakstone, saxifrage |
|---|
| rockiness | (noun) the quality of abounding in rocks and stones | - |
|---|
| rockrose | (noun) small shrubs of scrub and dry woodland regions of southern Europe and North Africa; grown for their showy flowers and soft often downy and aromatic evergreen foliage | Synonyms: rock rose |
|---|
| (noun) any of numerous varieties of helianthemums having small rose-like yellow or white or reddish flowers | Synonyms: rock rose |
| rockslide | (noun) a landslide of rocks | - |
|---|
| rockweed | (noun) coarse brown seaweed growing on rocks exposed at low tide | - |
|---|
| rococo | (noun) fanciful but graceful asymmetric ornamentation in art and architecture that originated in France in the 18th century | - |
|---|
| rod | (noun) any rod-shaped bacterium | - |
|---|
| (noun) a long thin implement made of metal or wood | - |
| (noun) a gangster's pistol | Synonyms: gat |
| (noun) a visual receptor cell that is sensitive to dim light | Synonyms: retinal rod, rod cell |
| (noun) a linear measure of 16.5 feet | Synonyms: perch, pole |
| (noun) a square rod of land | Synonyms: perch, pole |
| rodent | (noun) relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing | Synonyms: gnawer |
|---|
| rodeo | (noun) an exhibition of cowboy skills | - |
|---|
| (noun) an enclosure for cattle that have been rounded up | - |
| rodomontade | (noun) vain and empty boasting | Synonyms: bluster, braggadocio, rhodomontade |
|---|
| roe | (noun) eggs of female fish | - |
|---|
| (noun) the eggs or egg-laden ovary of a fish | - |
| (noun) the egg mass or spawn of certain crustaceans such as the lobster | - |
| (noun) fish eggs or egg-filled ovary; having a grainy texture | Synonyms: hard roe |
| roebuck | (noun) male roe deer | - |
|---|
| roentgen | (noun) a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air | Synonyms: R |
|---|
| roentgenium | (noun) a radioactive transuranic element, with atomic number 111 | Synonyms: atomic number 111, element 111, Rg |
|---|
| roentgenogram | (noun) a radiogram made by exposing photographic film to X rays; used in medical diagnosis | Synonyms: X-ray, X-ray photograph, X-ray picture, X ray |
|---|
| roentgenography | (noun) radiography that uses X-rays to produce a roentgenogram | Synonyms: X-ray photography |
|---|
| roentgenoscope | (noun) an X-ray machine that combines an X-ray source and a fluorescent screen to enable direct observation | Synonyms: fluoroscope |
|---|
| rofecoxib | (noun) a Cox-2 inhibitor (trade name Vioxx) that relieves pain and inflammation without harming the digestive tract; voluntarily withdrawn from the market in 2004 | Synonyms: Vioxx |
|---|
| rogation | (noun) a solemn supplication ceremony prescribed by the church | - |
|---|
| rogue | (noun) a deceitful and unreliable scoundrel | Synonyms: knave, rapscallion, rascal, scalawag, scallywag, varlet |
|---|
| roguery | (noun) reckless or malicious behavior that causes discomfort or annoyance in others | Synonyms: devilment, devilry, deviltry, mischief-making, mischief, mischievousness, rascality, roguishness, shenanigan |
|---|
| roguishness | (noun) reckless or malicious behavior that causes discomfort or annoyance in others | Synonyms: devilment, devilry, deviltry, mischief-making, mischief, mischievousness, rascality, roguery, shenanigan |
|---|
| (noun) the trait of indulging in disreputable pranks | Synonyms: prankishness, rascality |
| roisterer | (noun) an especially noisy and unrestrained merrymaker | - |
|---|
| role | (noun) the actions and activities assigned to or required or expected of a person or group | Synonyms: function, office, part |
|---|
| (noun) normal or customary activity of a person in a particular social setting | - |
| (noun) what something is used for | Synonyms: function, purpose, use |
| (noun) an actor's portrayal of someone in a play | Synonyms: character, part, persona, theatrical role |
| roleplaying | (noun) acting a particular role (as in psychotherapy) | - |
|---|
| roll | (noun) a flight maneuver; aircraft rotates about its longitudinal axis without changing direction or losing altitude | - |
|---|
| (noun) the act of rolling something (as the ball in bowling) | Synonyms: bowl |
| (noun) the act of throwing dice | Synonyms: cast |
| (noun) walking with a swaying gait | - |
| (noun) anything rolled up in cylindrical form | - |
| (noun) photographic film rolled up inside a container to protect it from light | - |
| (noun) a list of names | Synonyms: roster |
| (noun) a document that can be rolled up (as for storage) | Synonyms: scroll |
| (noun) a deep prolonged sound (as of thunder or large bells) | Synonyms: peal, pealing, rolling |
| (noun) a long heavy sea wave as it advances towards the shore | Synonyms: roller, rolling wave |
| (noun) rotary motion of an object around its own axis | Synonyms: axial motion, axial rotation |
| (noun) the sound of a drum (especially a snare drum) beaten rapidly and continuously | Synonyms: drum roll, paradiddle |
| (noun) small rounded bread either plain or sweet | Synonyms: bun |
| (noun) a roll of currency notes (often taken as the resources of a person or business etc.) | Synonyms: bankroll |
| (noun) a round shape formed by a series of concentric circles (as formed by leaves or flower petals) | Synonyms: coil, curl, curlicue, gyre, ringlet, scroll, whorl |
| rollback | (noun) the act of forcing the enemy to withdraw | Synonyms: push back |
|---|
| (noun) reducing prices back to some earlier level | - |
| roller | (noun) a grounder that rolls along the infield | - |
|---|
| (noun) Old World bird that tumbles or rolls in flight; related to kingfishers | - |
| (noun) pigeon that executes backward somersaults in flight or on the ground | Synonyms: tumbler, tumbler pigeon |
| (noun) a cylinder that revolves | - |
| (noun) a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it | Synonyms: crimper, curler, hair curler |
| (noun) a small wheel without spokes (as on a roller skate) | - |
| (noun) a long heavy sea wave as it advances towards the shore | Synonyms: roll, rolling wave |
| rollerblader | (noun) a skater who uses Rollerblades | - |
|---|
| rollerblading | (noun) skating using Rollerblades | - |
|---|
| rolling | (noun) propelling something on wheels | Synonyms: wheeling |
|---|
| (noun) the act of robbing a helpless person | - |
| (noun) a deep prolonged sound (as of thunder or large bells) | Synonyms: peal, pealing, roll |
| rollmops | (noun) a pickled herring filet that has been rolled or wrapped around a pickle | - |
|---|
| rollover | (noun) the act of changing the institution that invests your pension plan without incurring a tax penalty | - |
|---|
| rolypoliness | (noun) the property of having a plump and round body | Synonyms: chubbiness, pudginess, tubbiness |
|---|
| romaine | (noun) lettuce with long dark-green leaves in a loosely packed elongated head | Synonyms: cos, cos lettuce, romaine lettuce |
|---|
| roman | (noun) a typeface used in ancient Roman inscriptions | Synonyms: roman letters, roman print, roman type |
|---|
| romance | (noun) an exciting and mysterious quality (as of a heroic time or adventure) | Synonyms: romanticism |
|---|
| (noun) a novel dealing with idealized events remote from everyday life | - |
| (noun) a story dealing with love | Synonyms: love story |
| (noun) a relationship between two lovers | Synonyms: love affair |
| romantic | (noun) a soulful or amorous idealist | - |
|---|
| (noun) an artist of the Romantic Movement or someone influenced by Romanticism | Synonyms: romanticist |
| romanticisation | (noun) the act of indulging in sentiment | Synonyms: romanticization, sentimentalisation, sentimentalization |
|---|
| romanticism | (noun) impractical romantic ideals and attitudes | - |
|---|
| (noun) an exciting and mysterious quality (as of a heroic time or adventure) | Synonyms: romance |
| romanticist | (noun) an artist of the Romantic Movement or someone influenced by Romanticism | Synonyms: romantic |
|---|
| (noun) someone who indulges in excessive sentimentality | Synonyms: sentimentalist |
| romanticization | (noun) the act of indulging in sentiment | Synonyms: romanticisation, sentimentalisation, sentimentalization |
|---|
| romp | (noun) gay or light-hearted recreational activity for diversion or amusement | Synonyms: caper, frolic, gambol, play |
|---|
| (noun) an easy victory | Synonyms: blowout, laugher, runaway, shoo-in, walkaway |
| (noun) a girl who behaves in a boyish manner | Synonyms: hoyden, tomboy |
| romper | (noun) a one-piece garment for children to wear at play; the lower part is shaped like bloomers | Synonyms: romper suit |
|---|
| (noun) a person who romps or frolics | - |
| rondeau | (noun) a French verse form of 10 or 13 lines running on two rhymes; the opening phrase is repeated as the refrain of the second and third stanzas | Synonyms: rondel |
|---|
| (noun) a musical form that is often the last movement of a sonata | Synonyms: rondo |
| rondel | (noun) a French verse form of 10 or 13 lines running on two rhymes; the opening phrase is repeated as the refrain of the second and third stanzas | Synonyms: rondeau |
|---|
| rondelet | (noun) a shorter form of rondeau | - |
|---|
| rondo | (noun) a musical form that is often the last movement of a sonata | Synonyms: rondeau |
|---|
| rood | (noun) representation of the cross on which Jesus died | Synonyms: crucifix, rood-tree |
|---|
| roof | (noun) a protective covering that covers or forms the top of a building | - |
|---|
| (noun) protective covering on top of a motor vehicle | - |
| (noun) an upper limit on what is allowed | Synonyms: cap, ceiling |
| (noun) the inner top surface of a covered area or hollow space | - |
| roofer | (noun) a craftsman who lays or repairs roofs | - |
|---|
| roofing | (noun) the craft of a roofer | - |
|---|
| (noun) material used to construct a roof | - |
| rooftop | (noun) the top of a (usually flat) roof | - |
|---|