| pyrolatry | (noun) the worship of fire | Synonyms: fire-worship |
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| pyroligneous | (adjective) of a substance produced by the effect of heat on wood, especially by destructive distillation | Synonyms: pyrolignic |
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| pyrolignic | (adjective) of a substance produced by the effect of heat on wood, especially by destructive distillation | Synonyms: pyroligneous |
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| pyrolusite | (noun) a mineral consisting of manganese dioxide; an important source of manganese | - |
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| pyrolysis | (noun) transformation of a substance produced by the action of heat | - |
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| pyrolytic | (adjective) resulting from pyrolysis | - |
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| pyromancer | (noun) one who practices pyromancy | - |
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| pyromancy | (noun) divination by fire or flames | - |
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| pyromania | (noun) an uncontrollable desire to set fire to things | - |
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| pyromaniac | (noun) a person with a mania for setting things on fire | - |
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| pyrometer | (noun) a thermometer designed to measure high temperatures | - |
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| pyromorphite | (noun) a mineral consisting of lead chloride and phosphate; a minor source of lead | Synonyms: green lead ore |
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| pyrope | (noun) a deep red garnet used as a gemstone | - |
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| pyrophobia | (noun) a morbid fear of fire | - |
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| pyrophosphate | (noun) a salt or ester of pyrophosphoric acid | - |
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| pyrophyllite | (noun) a white or greenish aluminum silicate mineral (resembles talc) | - |
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| pyroscope | (noun) a pyrometer that uses the color of the light emitted by a hot object | Synonyms: optical pyrometer |
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| pyrosis | (noun) a painful burning sensation in the chest caused by gastroesophageal reflux (backflow from the stomach irritating the esophagus); symptomatic of an ulcer or a diaphragmatic hernia or other disorder | Synonyms: heartburn |
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| pyrostat | (noun) a thermostat that operates at very high temperatures | - |
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| pyrotechnic | (adjective) of or relating to the craft of making fireworks | Synonyms: pyrotechnical |
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| (adjective) suggestive of fireworks | - |
| (noun) (usually plural) a device with an explosive that burns at a low rate and with colored flames; can be used to illuminate areas or send signals etc. | Synonyms: firework |
| pyrotechnical | (adjective) of or relating to the craft of making fireworks | Synonyms: pyrotechnic |
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| pyrotechnics | (noun) the craft of making fireworks | Synonyms: pyrotechny |
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| (noun) (music) brilliance of display (as in the performance of music) | - |
| pyrotechny | (noun) the craft of making fireworks | Synonyms: pyrotechnics |
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| pyroxene | (noun) any of a group of crystalline silicate mineral common in igneous and metamorphic rocks | - |
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| pyroxylin | (noun) highly flammable nitrocellulose used in making collodion and plastics and lacquers | Synonyms: pyroxyline |
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| pyroxyline | (noun) highly flammable nitrocellulose used in making collodion and plastics and lacquers | Synonyms: pyroxylin |
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| pyrrhic | (adjective) of or relating to or resembling Pyrrhus or his exploits (especially his sustaining staggering losses in order to defeat the Romans) | - |
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| (adjective) of or relating to or containing a metrical foot of two unstressed syllables | - |
| (adjective) of or relating to a war dance of ancient Greece | - |
| (noun) an ancient Greek dance imitating the motions of warfare | - |
| (noun) a metrical unit with unstressed-unstressed syllables | Synonyms: dibrach |
| pyrrhotine | (noun) a brownish iron sulfide mineral (FeS) having weak magnetic properties | Synonyms: magnetic pyrites, pyrrhotite |
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| pyrrhotite | (noun) a brownish iron sulfide mineral (FeS) having weak magnetic properties | Synonyms: magnetic pyrites, pyrrhotine |
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| pyrrhuloxia | (noun) crested grey-and-red bird of southwest United States and Mexico | Synonyms: Pyrrhuloxia sinuata |
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| pythium | (noun) any fungus of the genus Pythium | - |
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| python | (noun) large Old World boas | - |
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| (noun) a soothsaying spirit or a person who is possessed by such a spirit | - |
| pythoness | (noun) a witch with powers of divination | - |
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| pyuria | (noun) presence of white blood cells in the urine; symptom of urinary tract infection | - |
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| pyx | (noun) any receptacle in which wafers for the Eucharist are kept | Synonyms: pix |
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| (noun) a chest in which coins from the mint are held to await assay | Synonyms: pix, pix chest, pyx chest |
| pyxidium | (noun) fruit of such plants as the plantain; a capsule whose upper part falls off when the seeds are released | Synonyms: pyxis |
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| pyxie | (noun) creeping evergreen shrub having narrow overlapping leaves and early white star-shaped flowers; of the pine barrens of New Jersey and the Carolinas | Synonyms: pixie, pixy, Pyxidanthera barbulata |
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| pyxis | (noun) a small box used by ancient Greeks to hold medicines | - |
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| (noun) fruit of such plants as the plantain; a capsule whose upper part falls off when the seeds are released | Synonyms: pyxidium |
| radioscopy | (noun) (radiology) examination of the inner structure of opaque objects using X rays or other penetrating radiation | Synonyms: radiology |
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| radiotherapy | (noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance | Synonyms: actinotherapy, irradiation, radiation, radiation therapy |
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| raspy | (adjective) unpleasantly harsh or grating in sound | Synonyms: grating, gravelly, rasping, rough, scratchy |
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| recopy | (verb) copy again | - |
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| rhinoscopy | (noun) examination of the nasal passages (either through the anterior nares or with a rhinoscope through the nasopharynx) | - |
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| ropy | (adjective) of or resembling rope (or ropes) in being long and strong | Synonyms: ropey |
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| (adjective) (British informal) very poor in quality | Synonyms: ropey |
| (adjective) forming viscous or glutinous threads | Synonyms: ropey, stringy, thready |
| sappy | (adjective) effusively or insincerely emotional | Synonyms: bathetic, drippy, hokey, kitschy, maudlin, mawkish, mushy, schmaltzy, schmalzy, sentimental, slushy, soppy, soupy |
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| (adjective) abounding in sap | - |
| scrappy | (adjective) full of fighting spirit | - |
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| scrimpy | (adjective) deficient in amount or quality or extent | Synonyms: meager, meagerly, meagre, stingy |
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| scrumpy | (noun) strong cider (as made in western England) | - |
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| sharpy | (noun) a professional card player who makes a living by cheating at card games | Synonyms: card shark, card sharp, card sharper, cardsharp, cardsharper, sharper, sharpie |
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| (noun) an alert and energetic person | Synonyms: busy bee, eager beaver, live wire, sharpie |
| shipyard | (noun) a workplace where ships are built or repaired | - |
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| shrimpy | (adjective) (used especially of persons) of inferior size | Synonyms: puny, runty |
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| sigmoidoscopy | (noun) visual examination (with a sigmoidoscope) of the lower third of the colon in a search for polyps | Synonyms: flexible sigmoidoscopy |
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| skimpy | (adjective) containing little excess | Synonyms: lean |
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| (adjective) (of clothing) revealing the body | Synonyms: scanty |
| slaphappy | (adjective) dazed from or as if from repeated blows | Synonyms: punch-drunk, silly |
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| (adjective) cheerfully irresponsible | Synonyms: carefree, devil-may-care, freewheeling, happy-go-lucky, harum-scarum |
| sleepy | (adjective) ready to fall asleep | Synonyms: sleepy-eyed, sleepyheaded |
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| sleepyhead | (noun) a sleepy person | - |
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| sleepyheaded | (adjective) ready to fall asleep | Synonyms: sleepy-eyed, sleepy |
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| slippy | (adjective) causing or tending to cause things to slip or slide | Synonyms: slippery |
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| sloppy | (adjective) marked by great carelessness | Synonyms: haphazard, slapdash, slipshod |
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| (adjective) excessively or abnormally emotional | Synonyms: overemotional |
| (adjective) not fitting closely; hanging loosely | Synonyms: baggy, loose-fitting |
| (adjective) lacking neatness or order | - |
| (adjective) (of soil) soft and watery | Synonyms: boggy, marshy, miry, mucky, muddy, quaggy, sloughy, soggy, squashy, swampy, waterlogged |
| (adjective) wet or smeared with a spilled liquid or moist material | - |
| snappy | (adjective) pleasantly cold and invigorating | Synonyms: crisp, frosty, nipping, nippy |
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| (adjective) quick and energetic | Synonyms: alert, brisk, lively, merry, rattling, spanking, zippy |
| (adjective) marked by up-to-dateness in dress and manners | Synonyms: dapper, dashing, jaunty, natty, raffish, rakish, spiffy, spruce |
| (adjective) apt to speak irritably | Synonyms: snappish |
| (adjective) smart and fashionable | Synonyms: whipping |
| snoopy | (adjective) offensively curious or inquisitive | Synonyms: nosey, nosy, prying |
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| soapy | (adjective) resembling or having the qualities of soap | Synonyms: saponaceous |
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| (adjective) unpleasantly and excessively suave or ingratiating in manner or speech | Synonyms: buttery, fulsome, oily, oleaginous, smarmy, unctuous |
| soppy | (adjective) effusively or insincerely emotional | Synonyms: bathetic, drippy, hokey, kitschy, maudlin, mawkish, mushy, sappy, schmaltzy, schmalzy, sentimental, slushy, soupy |
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| (adjective) wet through and through; thoroughly wet | Synonyms: sodden |
| soupy | (adjective) effusively or insincerely emotional | Synonyms: bathetic, drippy, hokey, kitschy, maudlin, mawkish, mushy, sappy, schmaltzy, schmalzy, sentimental, slushy, soppy |
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| (adjective) having the consistency and appearance of soup | - |
| spectroscopy | (noun) the use of spectroscopes to analyze spectra | Synonyms: spectrographic analysis, spectrometry, spectroscopic analysis, spectrum analysis |
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| spoopy | (adjective) funny and spooky at the same time | - |
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| spy | (noun) (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors | Synonyms: undercover agent |
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| (noun) a secret watcher; someone who secretly watches other people | - |
| (verb) secretly collect sensitive or classified information; engage in espionage | - |
| (verb) watch, observe, or inquire secretly | Synonyms: sleuth, snoop, stag |
| (verb) catch sight of | Synonyms: descry, espy, spot |
| (verb) catch sight of; to perceive with the eyes | Synonyms: sight |
| spyglass | (noun) a small refracting telescope | Synonyms: field glass, glass |
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| spyhole | (noun) a hole (in a door or an oven etc) through which you can peep | Synonyms: eyehole, peephole |
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| spying | (noun) the act of keeping a secret watch for intelligence purposes | Synonyms: undercover work |
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| (noun) keeping a secret or furtive watch | - |
| (noun) the act of detecting something; catching sight of something | Synonyms: catching, detection, espial, spotting |
| spymaster | (noun) someone who directs clandestine intelligence activities | - |
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| spyware | (noun) computer software that obtains information from a user's computer without the user's knowledge or consent | - |
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| steatopygia | (noun) an extreme accumulation of fat on the buttocks | - |
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| stereoscopy | (noun) three-dimensional vision produced by the fusion of two slightly different views of a scene on each retina | Synonyms: stereoscopic vision |
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| stripy | (adjective) marked or decorated with stripes | Synonyms: striped |
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| stroppy | (adjective) obstreperous | Synonyms: bolshy |
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| stumpy | (adjective) short and thick; as e.g. having short legs and heavy musculature | Synonyms: chunky, dumpy, low-set, squat, squatty |
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| sulfapyridine | (noun) sulfa drug derived from pyridine and sulfanilamide | - |
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| swampy | (adjective) (of soil) soft and watery | Synonyms: boggy, marshy, miry, mucky, muddy, quaggy, sloppy, sloughy, soggy, squashy, waterlogged |
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| syrupy | (adjective) with honey added | Synonyms: honeyed, honied |
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| (adjective) overly sweet | Synonyms: cloying, saccharine, treacly |
| (adjective) having a relatively high resistance to flow | Synonyms: viscous |
| telescopy | (noun) the art of making and using telescopes | - |
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| therapy | (noun) (medicine) the act of caring for someone (as by medication or remedial training etc.) | Synonyms: treatment |
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| thermotherapy | (noun) the use of heat to treat a disease or disorder; heating pads or hot compresses or hot-water bottles are used to promote circulation in peripheral vascular disease or to relax tense muscles | - |
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| tippy | (adjective) (used of boats) inclined to heel over easily under sail | Synonyms: crank, cranky, tender |
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| tippytoe | (verb) walk on one's toes | Synonyms: tip, tiptoe |
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| triphosphopyridine | (noun) a pyridine ring with three phosphorus groups | - |
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| unhappy | (adjective) experiencing or marked by or causing sadness or sorrow or discontent | - |
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| (adjective) generalized feeling of distress | Synonyms: distressed, dysphoric |
| (adjective) marked by or producing unhappiness | Synonyms: infelicitous |
| (adjective) causing discomfort | - |
| uropygium | (noun) posterior part of a bird's body from which the tail feathers grow | - |
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| weepy | (adjective) liable to weep easily | - |
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| whippy | (adjective) bending and snapping back readily without breaking | Synonyms: flexible |
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| wicopy | (noun) deciduous shrub of eastern North America having tough flexible branches and pliable bark and small yellow flowers | Synonyms: Dirca palustris, leatherwood, moose-wood, moosewood, ropebark |
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| wimpy | (adjective) weak and ineffectual | Synonyms: wimpish |
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| wispy | (adjective) lacking clarity or distinctness | Synonyms: dim, faint, shadowy, vague |
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| (adjective) thin and weak | Synonyms: wisplike |
| zippy | (adjective) quick and energetic | Synonyms: alert, brisk, lively, merry, rattling, snappy, spanking |
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| (adjective) marked by lively action | Synonyms: bouncing, bouncy, peppy, spirited |
| zoanthropy | (noun) the delusion that you have assumed the form of an animal | - |
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