| ribbonwood | (noun) small tree or shrub of New Zealand having a profusion of axillary clusters of honey-scented paper-white flowers and whose bark is used for cordage | Synonyms: Hoheria populnea, houhere, lacebark |
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| (noun) deciduous New Zealand tree whose inner bark yields a strong fiber that resembles flax and is called New Zealand cotton | Synonyms: Plagianthus betulinus, Plagianthus regius, ribbon tree |
| ribwort | (noun) an Old World plantain with long narrow ribbed leaves widely established in temperate regions | Synonyms: buckthorn, English plantain, narrow-leaved plantain, Plantago lanceolata, ribgrass, ripple-grass |
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| ringworm | (noun) infections of the skin or nails caused by fungi and appearing as itching circular patches | Synonyms: roundworm, tinea |
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| roadworthiness | (noun) (of motor vehicles) the quality of being fit to drive on the open road | - |
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| rosewood | (noun) any of those hardwood trees of the genus Dalbergia that yield rosewood--valuable cabinet woods of a dark red or purplish color streaked and variegated with black | Synonyms: rosewood tree |
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| (noun) hard dark reddish wood of a rosewood tree having a strongly marked grain; used in cabinetwork | - |
| 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 |
| rupturewort | (noun) common prostrate Old World herb often used as a ground cover; formerly reputed to cure ruptures | Synonyms: Hernaria glabra |
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| saleswoman | (noun) a woman salesperson | Synonyms: salesgirl, saleslady |
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| salmwood | (noun) large tropical American tree of the genus Cordia grown for its abundant creamy white flowers and valuable wood | Synonyms: Cordia alliodora, cypre, Equador laurel, princewood, Spanish elm |
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| saltworks | (noun) a plant where salt is produced commercially | - |
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| saltwort | (noun) low-growing strong-smelling coastal shrub of warm parts of the New World having unisexual flowers in conelike spikes and thick succulent leaves | Synonyms: Batis maritima |
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| (noun) bushy plant of Old World salt marshes and sea beaches having prickly leaves; burned to produce a crude soda ash | Synonyms: barilla, glasswort, kali, kelpwort, Salsola kali, Salsola soda |
| sandalwood | (noun) close-grained fragrant yellowish heartwood of the true sandalwood; has insect repelling properties and is used for carving and cabinetwork | - |
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| sandwort | (noun) low-growing chiefly perennial plant usually with small white flowers suitable for e.g. rock gardens | - |
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| (noun) low-growing herb having clusters of small white four-petaled flowers | Synonyms: Moehringia lateriflora |
| (noun) loosely matted plant with moss-like foliage studded with tiny starry four-petaled white blossoms; mountains of central and southern Europe | Synonyms: Moehringia mucosa |
| sapwood | (noun) newly formed outer wood lying between the cambium and the heartwood of a tree or woody plant; usually light colored; active in water conduction | - |
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| satinwood | (noun) East Indian tree with valuable hard lustrous yellowish wood | Synonyms: Chloroxylon swietenia, satinwood tree |
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| (noun) West Indian tree with smooth lustrous and slightly oily wood | Synonyms: West Indian satinwood, Zanthoxylum flavum |
| (noun) hard yellowish wood of a satinwood tree having a satiny luster; used for fine cabinetwork and tools | - |
| sawwort | (noun) European perennial whose serrate leaves yield a yellow dye | Synonyms: Serratula tinctoria |
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| schoolwork | (noun) work, such as schoolwork or piecework, that is done at home | Synonyms: homework, school assignment |
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| seaworthiness | (noun) fitness to traverse the seas | - |
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| seaworthy | (adjective) fit for a sea voyage | - |
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| selectwoman | (noun) a female elected member of a board of officials who run New England towns | - |
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| setterwort | (noun) digitate-leaved hellebore with an offensive odor and irritant qualities when taken internally | Synonyms: bear's foot, Helleborus foetidus, stinking hellebore |
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| shipworm | (noun) wormlike marine bivalve that bores into wooden piers and ships by means of drill-like shells | Synonyms: teredinid |
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| shittimwood | (noun) wood of the shittah tree used to make the ark of the Hebrew Tabernacle | - |
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| (noun) deciduous tree of southeastern United States and Mexico | Synonyms: black haw, Bumelia lanuginosa, chittamwood, chittimwood, false buckthorn |
| (noun) shrubby thorny deciduous tree of southeastern United States with white flowers and small black drupaceous fruit | Synonyms: Bumelia lycioides, mock orange, shittim, southern buckthorn |
| shitwork | (noun) trivial, unrewarding, tedious, dirty, and disagreeable chores | Synonyms: scut work |
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| shopworn | (adjective) repeated too often; overfamiliar through overuse | Synonyms: banal, commonplace, hackneyed, old-hat, stock, threadbare, timeworn, tired, trite, well-worn |
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| (adjective) worn or faded from being on display in a store | Synonyms: shopsoiled |
| silkwood | (noun) a fast-growing tropical American evergreen having white flowers and fleshy edible fruit; a bark yields a silky fiber used in cordage and wood is valuable for staves | Synonyms: calabur tree, calabura, Jamaican cherry, Muntingia calabura, silk wood |
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| silkworm | (noun) the commercially bred hairless white caterpillar of the domestic silkworm moth which spins a cocoon that can be processed to yield silk fiber; the principal source of commercial silk | - |
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| (noun) larva of a saturniid moth; spins a large amount of strong silk in constructing its cocoon | Synonyms: giant silkworm, wild wilkworm |
| silversword | (noun) low-growing plant found only in volcanic craters on Hawaii having rosettes of narrow pointed silver-green leaves and clusters of profuse red-purple flowers on a tall stem | Synonyms: Argyroxiphium sandwicense |
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| silverwork | (noun) decorative work made of silver | - |
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| silverworker | (noun) someone who makes or repairs articles of silver | Synonyms: silver-worker, silversmith |
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| slipperwort | (noun) any garden plant of the genus Calceolaria having flowers with large inflated slipper-shaped lower lip | Synonyms: calceolaria |
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| slowworm | (noun) small burrowing legless European lizard with tiny eyes; popularly believed to be blind | Synonyms: Anguis fragilis, blindworm |
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| snakewood | (noun) East Indian climbing shrub with twisted limbs and roots resembling serpents | Synonyms: Rauwolfia serpentina |
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| sneezewort | (noun) Eurasian herb having loose heads of button-shaped white flowers and long grey-green leaves that cause sneezing when powdered | Synonyms: Achillea ptarmica, sneezeweed yarrow |
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| soapwort | (noun) plant of European origin having pink or white flowers and leaves yielding a detergent when bruised | Synonyms: bouncing Bess, bouncing Bet, hedge pink, Saponaria officinalis |
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| softwood | (noun) wood that is easy to saw (from conifers such as pine or fir) | Synonyms: deal |
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| sourwood | (noun) deciduous shrubby tree of eastern North America having deeply fissured bark and sprays of small fragrant white flowers and sour-tasting leaves | Synonyms: Oxydendrum arboreum, sorrel tree, titi |
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| southernwood | (noun) shrubby European wormwood naturalized in North America; sometimes used in brewing beer | Synonyms: Artemisia abrotanum |
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| spadework | (noun) dull or routine preliminary work preparing for an undertaking | - |
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| spiderwort | (noun) any plant of the family Commelinaceae | Synonyms: dayflower |
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| spleenwort | (noun) any of various chiefly rock-inhabiting ferns of the genus Asplenium | - |
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| splitworm | (noun) greyish-brown moth whose larva is the potato tuberworm | Synonyms: Phthorimaea operculella, potato moth, potato tuber moth |
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| spokeswoman | (noun) a female spokesperson | - |
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| sportswoman | (noun) a female who engages in sports | - |
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| starwort | (noun) low-growing north temperate herb having small white star-shaped flowers; named for its alleged ability to ease sharp pains in the side | Synonyms: greater stitchwort, Stellaria holostea, stitchwort |
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| stateswoman | (noun) a woman statesman | - |
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| steelworker | (noun) a worker engaged in making steel | Synonyms: steelmaker, steelman |
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| steelworks | (noun) a factory where steel is made | Synonyms: steel factory, steel mill, steel plant |
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| stitchwort | (noun) low-growing north temperate herb having small white star-shaped flowers; named for its alleged ability to ease sharp pains in the side | Synonyms: greater stitchwort, starwort, Stellaria holostea |
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| stonework | (noun) masonry done with stone | - |
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| stonewort | (noun) any of various submerged aquatic algae of the genus Chara having nodes with whorled filamentlike branches; usually encrusted with calcium carbonate deposits | - |
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| strawworm | (noun) larva of chalcid flies injurious to the straw of wheat and other grains | Synonyms: jointworm |
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| (noun) larva of the caddis fly; constructs a case of silk covered with sand or plant debris | Synonyms: caddisworm |
| subwoofer | (noun) a loudspeaker that is designed to reproduce very low bass frequencies | - |
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| swallowwort | (noun) perennial herb with branched woody stock and bright yellow flowers | Synonyms: celandine, Chelidonium majus, greater celandine, swallow wort |
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| (noun) tropical herb having orange-red flowers followed by pods suggesting a swallow with outspread wings; a weed throughout the tropics | Synonyms: Asclepias curassavica, blood flower |
| swearword | (noun) profane or obscene expression usually of surprise or anger | Synonyms: curse, curse word, cuss, expletive, oath, swearing |
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| swob | (noun) cleaning implement consisting of absorbent material fastened to a handle; for cleaning floors | Synonyms: mop, swab |
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| (verb) wash with a swab or a mop | Synonyms: swab |
| (verb) apply (usually a liquid) to a surface | Synonyms: dab, swab |
| swole | (adjective) Extremely muscled | - |
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| swollen | (adjective) characteristic of false pride; having an exaggerated sense of self-importance | Synonyms: conceited, egotistic, egotistical, self-conceited, swollen-headed, vain |
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| (adjective) abnormally distended especially by fluids or gas | Synonyms: bloated, distended, intumescent, puffy, tumescent, tumid, turgid |
| swoon | (noun) a spontaneous loss of consciousness caused by insufficient blood to the brain | Synonyms: deliquium, faint, syncope |
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| (verb) pass out from weakness, physical or emotional distress due to a loss of blood supply to the brain | Synonyms: conk, faint, pass out |
| swooning | (adjective) weak and likely to lose consciousness | Synonyms: faint, light-headed, light, lightheaded |
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| swoop | (noun) a swift descent through the air | - |
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| (noun) a very rapid raid | - |
| (noun) (music) rapid sliding up or down the musical scale | Synonyms: slide |
| (verb) seize or catch with a swooping motion | Synonyms: swoop up |
| (verb) move down on as if in an attack | Synonyms: pounce |
| (verb) move with a sweep, or in a swooping arc | - |
| swoosh | (noun) the noise produced by the sudden rush of a fluid (a gas or liquid) | Synonyms: whoosh |
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| (verb) move with or cause to move with a whistling or hissing sound | Synonyms: lap, swish, swosh |
| swop | (noun) an equal exchange | Synonyms: barter, swap, trade |
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| (verb) exchange or give (something) in exchange for | Synonyms: swap, switch, trade |
| sword | (noun) a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard | Synonyms: blade, brand, steel |
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| swordfish | (noun) large toothless marine food fish with a long swordlike upper jaw; not completely cold-blooded i.e. they are able to warm their brains and eyes: worldwide in warm waters but feed on cold ocean floor coming to surface at night | Synonyms: Xiphias gladius |
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| (noun) flesh of swordfish usually served as steaks | - |
| swordlike | (adjective) shaped like a sword blade | Synonyms: bladelike, ensiform, sword-shaped |
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| swordplay | (noun) the act using a sword (or other weapon) vigorously and skillfully | Synonyms: play |
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| swordsman | (noun) someone skilled at fencing | Synonyms: fencer |
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| swordsmanship | (noun) skill in fencing | - |
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| swordtail | (noun) freshwater fish of Central America having a long swordlike tail; popular aquarium fish | Synonyms: helleri, topminnow, Xyphophorus helleri |
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| sworn | (adjective) bound by or stated on oath | - |
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| (adjective) bound by or as if by an oath | Synonyms: pledged |
| swosh | (verb) move with or cause to move with a whistling or hissing sound | Synonyms: lap, swish, swoosh |
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| swot | (noun) an insignificant student who is ridiculed as being affected or boringly studious | Synonyms: dweeb, grind, nerd, wonk |
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| (verb) study intensively, as before an exam | Synonyms: bone, bone up, cram, drum, get up, grind away, mug up, swot up |
| taekwondo | (noun) a Korean martial art similar to karate | Synonyms: tae kwon do |
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| tailwort | (noun) hairy blue-flowered European annual herb long used in herbal medicine and eaten raw as salad greens or cooked like spinach | Synonyms: borage, Borago officinalis |
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| tapeworm | (noun) ribbonlike flatworms that are parasitic in the intestines of humans and other vertebrates | Synonyms: cestode |
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| tarwood | (noun) New Zealand shrub | Synonyms: Dacrydium bidwilli, Halocarpus bidwilli, New Zealand mountain pine, tar-wood |
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| (noun) New Zealand silver pine of conical habit with long slender flexuous branches; adapted to cold wet summers and high altitudes | Synonyms: Dacrydium colensoi, tar-wood |
| teakwood | (noun) hard strong durable yellowish-brown wood of teak trees; resistant to insects and to warping; used for furniture and in shipbuilding | Synonyms: teak |
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| teamwork | (noun) cooperative work done by a team (especially when it is effective) | - |
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| teleworking | (noun) employment at home while communicating with the workplace by phone or fax or modem | Synonyms: telecommuting |
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| tetterwort | (noun) perennial woodland native of North America having a red root and red sap and bearing a solitary lobed leaf and white flower in early spring and having acrid emetic properties; rootstock used as a stimulant and expectorant | Synonyms: bloodroot, puccoon, redroot, Sanguinaria canadensis |
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| thoroughwort | (noun) perennial herb of southeastern United States having white-rayed flower heads; formerly used as in folk medicine | Synonyms: agueweed, boneset, Eupatorium perfoliatum |
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| threadworm | (noun) small threadlike worm infesting human intestines and rectum especially in children | Synonyms: Enterobius vermicularis, pinworm |
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| throatwort | (noun) European bellflower with blue-purple to lilac flowers formerly used to treat sore throat | Synonyms: Campanula trachelium, nettle-leaved bellflower |
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| timework | (noun) work paid for at a rate per unit of time | - |
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| timeworn | (adjective) repeated too often; overfamiliar through overuse | Synonyms: banal, commonplace, hackneyed, old-hat, shopworn, stock, threadbare, tired, trite, well-worn |
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| toothwort | (noun) North American herb with pungent scaly or toothed roots | Synonyms: Cardamine diphylla, crinkle-root, crinkle root, crinkleroot, Dentaria diphylla, pepper root |
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| touchwood | (noun) material for starting a fire | Synonyms: kindling, punk, spunk, tinder |
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| trestlework | (noun) a supporting structure composed of a system of connected trestles; for a bridge or pier or scaffold e.g. | - |
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| trumpetwood | (noun) tropical American tree with large peltate leaves and hollow stems | Synonyms: Cecropia peltata, imbauba, snake wood, trumpet-wood, trumpet tree |
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| trustworthiness | (noun) the trait of deserving trust and confidence | Synonyms: trustiness |
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| trustworthy | (adjective) worthy of trust or belief | Synonyms: trusty |
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| (adjective) taking responsibility for one's conduct and obligations | - |
| tulipwood | (noun) light easily worked wood of a tulip tree; used for furniture and veneer | Synonyms: true tulipwood, white poplar, whitewood, yellow poplar |
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| (noun) the variegated or showily striped ornamental wood of various tulipwood trees | - |
| twistwood | (noun) vigorous deciduous European treelike shrub common along waysides; red berries turn black | Synonyms: twist wood, Viburnum lantana, wayfaring tree |
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| two | (adjective) being one more than one | Synonyms: 2, ii |
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| (noun) one of the four playing cards in a deck that have two spots | Synonyms: deuce |
| (noun) the cardinal number that is the sum of one and one or a numeral representing this number | Synonyms: 2, deuce, II |
| twofer | (noun) an offer of two for the price of one | - |
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| (noun) a coupon that allows the holder to purchase two items (as two tickets to a play) for the price of one | - |
| twofold | (adjective) twice as great or many | Synonyms: double, doubled, two-fold |
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| (adjective) having more than one decidedly dissimilar aspects or qualities | Synonyms: double, dual, three-fold, threefold, treble, two-fold |
| (adverb) by a factor of two | Synonyms: two times |
| twopence | (noun) a former United Kingdom silver coin; United Kingdom bronze decimal coin worth two pennies | Synonyms: tuppence |
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| twopenny | (adjective) of trifling worth | Synonyms: sixpenny, threepenny, tuppeny, two-a-penny, twopenny-halfpenny |
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| twoscore | (adjective) being ten more than thirty | Synonyms: 40, forty, xl |
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