| amphitheater | (noun) an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | Synonyms: amphitheatre, coliseum |
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| (noun) a sloping gallery with seats for spectators (as in an operating room or theater) | Synonyms: amphitheatre |
| anteater | (noun) any of several tropical American mammals of the family Myrmecophagidae which lack teeth and feed on ants and termites | Synonyms: New World anteater |
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| (noun) nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata | Synonyms: aardvark, ant bear, Orycteropus afer |
| (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia | Synonyms: echidna, spiny anteater |
| (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to New Guinea | Synonyms: echidna, spiny anteater |
| (noun) toothless mammal of southern Africa and Asia having a body covered with horny scales and a long snout for feeding on ants and termites | Synonyms: pangolin, scaly anteater |
| (noun) small Australian marsupial having long snout and strong claws for feeding on termites; nearly extinct | Synonyms: banded anteater, Myrmecobius fasciatus, numbat |
| backwater | (noun) a place or condition in which no development or progress is occurring | - |
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| (noun) a body of water that was created by a flood or tide or by being held or forced back by a dam | - |
| barrater | (noun) someone guilty of barratry | Synonyms: barrator |
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| beater | (noun) an implement for beating | - |
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| (noun) a worker who rouses wild game from under cover for a hunter | - |
| beefeater | (noun) officer in the (ceremonial) bodyguard of the British monarch | Synonyms: yeoman, yeoman of the guard |
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| bilateralism | (noun) the property of being symmetrical about a vertical plane | Synonyms: bilateral symmetry, bilaterality |
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| bilaterality | (noun) the property of being symmetrical about a vertical plane | Synonyms: bilateral symmetry, bilateralism |
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| bilgewater | (noun) pretentious or silly talk or writing | Synonyms: baloney, boloney, bosh, drool, humbug, taradiddle, tarradiddle, tommyrot, tosh, twaddle |
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| blackwater | (noun) any of several human or animal diseases characterized by dark urine resulting from rapid breakdown of red blood cells | - |
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| bloater | (noun) large fatty herring lightly salted and briefly smoked | - |
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| boater | (noun) a stiff hat made of straw with a flat crown | Synonyms: leghorn, Panama, Panama hat, sailor, skimmer, straw hat |
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| (noun) someone who drives or rides in a boat | Synonyms: boatman, waterman |
| breakwater | (noun) a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away | Synonyms: bulwark, groin, groyne, jetty, mole, seawall |
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| caterer | (noun) someone who provides food and service (as for a party) | - |
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| catering | (noun) providing food and services | - |
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| caterpillar | (noun) a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth | - |
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| caterwaul | (noun) the yowling sound made by a cat in heat | - |
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| celebrater | (noun) a person who is celebrating | Synonyms: celebrant, celebrator |
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| cheater | (noun) someone who leads you to believe something that is not true | Synonyms: beguiler, cheat, deceiver, slicker, trickster |
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| collateral | (noun) a security pledged for the repayment of a loan | - |
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| crater | (noun) a bowl-shaped depression formed by the impact of a meteorite or bomb | - |
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| (noun) a bowl-shaped geological formation at the top of a volcano | Synonyms: volcanic crater |
| debater | (noun) someone who engages in debate | Synonyms: arguer |
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| dilater | (noun) a surgical instrument that is used to dilate or distend an opening or an organ | Synonyms: dilator |
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| dishwater | (noun) water in which dishes and cooking utensils are washed | - |
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| drumbeater | (noun) a fervent and even militant proponent of something | Synonyms: partisan, zealot |
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| eater | (noun) any green goods that are good to eat | - |
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| (noun) someone who consumes food for nourishment | Synonyms: feeder |
| eatery | (noun) a building where people go to eat | Synonyms: eating house, eating place, restaurant |
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| eggbeater | (noun) a mixer for beating eggs or whipping cream | Synonyms: eggwhisk |
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| (noun) an aircraft without wings that obtains its lift from the rotation of overhead blades | Synonyms: chopper, helicopter, whirlybird |
| elater | (noun) any of various widely distributed beetles | Synonyms: elaterid, elaterid beetle |
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| elaterid | (noun) any of various widely distributed beetles | Synonyms: elater, elaterid beetle |
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| electroplater | (noun) a plater who uses electrolysis | - |
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| equilateral | (noun) a figure whose sides are all equal | - |
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| extraterrestrial | (noun) a form of life assumed to exist outside the Earth or its atmosphere | Synonyms: alien, extraterrestrial being |
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| figeater | (noun) large greenish June beetle of southern United States | Synonyms: green June beetle |
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| firewater | (noun) any strong spirits (such as strong whisky or rum) | - |
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| floater | (noun) an insurance policy covering loss of movable property (e.g. jewelry) regardless of its location | Synonyms: floating policy |
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| (noun) an object that floats or is capable of floating | - |
| (noun) a swimmer who floats in the water | - |
| (noun) a wanderer who has no established residence or visible means of support | Synonyms: clochard, drifter, vagabond, vagrant |
| (noun) a voter who votes illegally at different polling places in the same election | - |
| (noun) an employee who is reassigned from job to job as needed | - |
| (noun) a debt instrument with a variable interest rate tied to some other interest rate (e.g. the rate paid by T-bills) | - |
| (noun) spots before the eyes caused by opaque cell fragments in the vitreous humor and lens | Synonyms: musca volitans, muscae volitantes, spots |
| fraternisation | (noun) associating with others in a brotherly or friendly way; especially with an enemy | Synonyms: fraternization |
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| fraternity | (noun) people engaged in a particular occupation | Synonyms: brotherhood, sodality |
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| (noun) a social club for male undergraduates | Synonyms: frat |
| fraternization | (noun) associating with others in a brotherly or friendly way; especially with an enemy | Synonyms: fraternisation |
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| freshwater | (noun) water that is not salty | Synonyms: fresh water |
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| goldbeater | (noun) an artisan who beats gold into gold leaf | Synonyms: gold-beater |
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| grater | (noun) utensil with sharp perforations for shredding foods (as vegetables or cheese) | - |
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| hater | (noun) a person who hates | - |
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| headwater | (noun) the source of a river | - |
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| heater | (noun) (baseball) a pitch thrown with maximum velocity | Synonyms: bullet, fastball, hummer, smoke |
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| (noun) device that heats water or supplies warmth to a room | Synonyms: warmer |
| hesitater | (noun) one who hesitates (usually out of fear) | Synonyms: hesitator, vacillator, waverer |
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| highwater | (noun) the tide when the water is highest | Synonyms: high tide, high water |
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| idolater | (noun) a person who worships idols | Synonyms: idol worshiper, idoliser, idolizer |
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| immateriality | (noun) the quality of not being physical; not consisting of matter | Synonyms: incorporeality |
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| (noun) complete irrelevance requiring no further consideration | - |
| inflater | (noun) an air pump operated by hand to inflate something (as a tire) | Synonyms: inflator |
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| lateral | (noun) a pass to a receiver upfield from the passer | Synonyms: lateral pass |
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| lateralisation | (noun) localization of function on either the right or left sides of the brain | Synonyms: laterality, lateralization |
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| laterality | (noun) superior development of one side of the body | Synonyms: dominance |
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| (noun) the property of using one hand more than the other | Synonyms: handedness |
| (noun) localization of function on either the right or left sides of the brain | Synonyms: lateralisation, lateralization |
| lateralization | (noun) localization of function on either the right or left sides of the brain | Synonyms: lateralisation, laterality |
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| latergram | (noun) a photo to be posted to Instagram at a later date | - |
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| laterite | (noun) a red soil produced by rock decay; contains insoluble deposits of ferric and aluminum oxides | - |
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| limewater | (noun) solution of calcium hydroxide in water used as an antacid | - |
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| locater | (noun) a person who fixes the boundaries of land claims | Synonyms: locator |
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| maltreater | (noun) someone who abuses | Synonyms: abuser |
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| mater | (noun) an informal use of the Latin word for mother; sometimes used by British schoolboys or used facetiously | - |
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| materfamilias | (noun) a female head of a family or tribe | Synonyms: matriarch |
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| material | (noun) artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers | Synonyms: cloth, fabric, textile |
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| (noun) things needed for doing or making something | - |
| (noun) information (data or ideas or observations) that can be used or reworked into a finished form | - |
| (noun) a person judged suitable for admission or employment | - |
| (noun) the tangible substance that goes into the makeup of a physical object | Synonyms: stuff |
| materialisation | (noun) an appearance in bodily form (as of a disembodied spirit) | Synonyms: manifestation, materialization |
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| (noun) something that comes into existence as a result | Synonyms: materialization, offspring |
| (noun) the process of coming into being; becoming reality | Synonyms: materialization |
| materialism | (noun) (philosophy) the philosophical theory that matter is the only reality | Synonyms: physicalism |
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| (noun) a desire for wealth and material possessions with little interest in ethical or spiritual matters | Synonyms: philistinism |
| materialist | (noun) someone who thinks that nothing exists but physical matter | - |
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| (noun) someone with great regard for material possessions | - |
| materiality | (noun) the quality of being physical; consisting of matter | Synonyms: corporality, corporeality, physicalness |
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| (noun) relevance requiring careful consideration | - |
| materialization | (noun) an appearance in bodily form (as of a disembodied spirit) | Synonyms: manifestation, materialisation |
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| (noun) something that comes into existence as a result | Synonyms: materialisation, offspring |
| (noun) the process of coming into being; becoming reality | Synonyms: materialisation |
| materiel | (noun) equipment and supplies of a military force | Synonyms: equipage |
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| maternalism | (noun) motherly care; behavior characteristic of a mother; the practice of acting as a mother does toward her children | - |
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| (noun) the quality of having or showing the tenderness and warmth and affection of or befitting a mother | Synonyms: maternal quality, maternity, motherliness |
| maternity | (noun) the quality of having or showing the tenderness and warmth and affection of or befitting a mother | Synonyms: maternal quality, maternalism, motherliness |
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| (noun) the kinship relation between an offspring and the mother | Synonyms: motherhood |
| (noun) the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus | Synonyms: gestation, pregnancy |
| meltwater | (noun) melted snow or ice | - |
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| pater | (noun) an informal use of the Latin word for father; sometimes used by British schoolboys or used facetiously | - |
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| paterfamilias | (noun) the male head of family or tribe | Synonyms: patriarch |
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| paternalism | (noun) the attitude (of a person or a government) that subordinates should be controlled in a fatherly way for their own good | - |
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| paternity | (noun) the act of initiating a new idea or theory or writing | Synonyms: authorship |
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| (noun) the kinship relation between an offspring and the father | Synonyms: fatherhood |
| (noun) the state of being a father | - |
| paternoster | (noun) a type of lift having a chain of open compartments that move continually in an endless loop so that (agile) passengers can step on or off at each floor | - |
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| plater | (noun) a skilled worker who coats articles with a film of metal (usually silver or gold) | - |
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| prater | (noun) an obnoxious and foolish and loquacious talker | Synonyms: babbler, chatterbox, chatterer, magpie, spouter |
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| quadrilateral | (noun) a four-sided polygon | Synonyms: quadrangle, tetragon |
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| quatercentenary | (noun) the 400th anniversary (or the celebration of it) | Synonyms: quatercentennial |
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| quatercentennial | (noun) the 400th anniversary (or the celebration of it) | Synonyms: quatercentenary |
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| quatern | (noun) the cardinal number that is the sum of three and one | Synonyms: 4, four, foursome, IV, Little Joe, quadruplet, quartet, quaternary, quaternion, quaternity, tetrad |
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| quaternary | (noun) the cardinal number that is the sum of three and one | Synonyms: 4, four, foursome, IV, Little Joe, quadruplet, quartet, quatern, quaternion, quaternity, tetrad |
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| quaternion | (noun) the cardinal number that is the sum of three and one | Synonyms: 4, four, foursome, IV, Little Joe, quadruplet, quartet, quatern, quaternary, quaternity, tetrad |
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| quaternity | (noun) the cardinal number that is the sum of three and one | Synonyms: 4, four, foursome, IV, Little Joe, quadruplet, quartet, quatern, quaternary, quaternion, tetrad |
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| rainwater | (noun) drops of fresh water that fall as precipitation from clouds | Synonyms: rain |
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| repeater | (noun) a firearm that can fire several rounds without reloading | Synonyms: repeating firearm |
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| (noun) (electronics) electronic device that amplifies a signal before transmitting it again | - |
| (noun) a person who repeats | - |
| (noun) someone who is repeatedly arrested for criminal behavior (especially for the same criminal behavior) | Synonyms: habitual criminal, recidivist |
| saltwater | (noun) water containing salts | Synonyms: brine, seawater |
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| seawater | (noun) water containing salts | Synonyms: brine, saltwater |
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| shearwater | (noun) long-winged oceanic bird that in flight skims close to the waves | - |
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| skater | (noun) someone who skates | - |
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| slater | (noun) any of various small terrestrial isopods having a flat elliptical segmented body; found in damp habitats | Synonyms: wood louse, woodlouse |
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| speedskater | (noun) an ice-skater who races competitively; usually around an oval course | Synonyms: speed skater |
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| stater | (noun) a resident of a particular state or group of states | - |
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| (noun) any of the various silver or gold coins of ancient Greece | - |
| stateroom | (noun) a guest cabin | - |
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| summercater | (noun) (Maine colloquial) a temporary summer resident of Maine | Synonyms: sport |
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| summercaters | (noun) (Maine colloquial) temporary summer residents of coastal Maine | - |
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| sweater | (noun) a crocheted or knitted garment covering the upper part of the body | Synonyms: jumper |
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| (noun) a person who perspires | Synonyms: perspirer |
| tailgater | (noun) a driver who follows too closely behind another motor vehicle | - |
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| tater | (noun) an edible tuber native to South America; a staple food of Ireland | Synonyms: Irish potato, murphy, potato, spud, white potato |
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