| inflammation | (noun) arousal to violent emotion | Synonyms: inflaming |
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| (noun) the act of setting something on fire | Synonyms: firing, ignition, kindling, lighting |
| (noun) a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat | Synonyms: redness, rubor |
| (noun) the state of being emotionally aroused and worked up | Synonyms: excitation, excitement, fervor, fervour |
| inflater | (noun) an air pump operated by hand to inflate something (as a tire) | Synonyms: inflator |
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| inflation | (noun) the act of filling something with air | - |
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| (noun) lack of elegance as a consequence of being pompous and puffed up with vanity | Synonyms: ostentation, ostentatiousness, pomposity, pompousness, pretentiousness, puffiness, splashiness |
| (noun) (cosmology) a brief exponential expansion of the universe (faster than the speed of light) postulated to have occurred shortly after the big bang | - |
| (noun) a general and progressive increase in prices | Synonyms: rising prices |
| inflator | (noun) an air pump operated by hand to inflate something (as a tire) | Synonyms: inflater |
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| inflection | (noun) the patterns of stress and intonation in a language | Synonyms: prosody |
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| (noun) a manner of speaking in which the loudness or pitch or tone of the voice is modified | Synonyms: modulation |
| (noun) deviation from a straight or normal course | Synonyms: flection, flexion |
| (noun) a change in the form of a word (usually by adding a suffix) to indicate a change in its grammatical function | Synonyms: inflexion |
| inflexibility | (noun) the quality of being rigid and rigorously severe | Synonyms: rigidity, rigidness |
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| (noun) a lack of physical flexibility | Synonyms: inflexibleness |
| inflexibleness | (noun) a lack of physical flexibility | Synonyms: inflexibility |
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| inflexion | (noun) a change in the form of a word (usually by adding a suffix) to indicate a change in its grammatical function | Synonyms: inflection |
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| infliction | (noun) the act of imposing something (as a tax or an embargo) | Synonyms: imposition |
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| (noun) an act causing pain or damage | - |
| (noun) something or someone that causes trouble; a source of unhappiness | Synonyms: annoyance, bother, botheration, nuisance, pain, pain in the ass, pain in the neck |
| infliximab | (noun) an anti-TNF compound (trade name Remicade) consisting of an antibody directed against TNF; it is given intravenously at one-month to three-month intervals; used in treatment of regional enteritis and rheumatoid arthritis | Synonyms: Remicade |
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| (noun) a monoclonal antibody (trade name Remicade) used to treat Crohn's disease and rheumatoid arthritis; administered by infusion; use and dosage must be determined by a physician | Synonyms: Remicade |
| inflorescence | (noun) the flowering part of a plant or arrangement of flowers on a stalk | - |
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| (noun) the time and process of budding and unfolding of blossoms | Synonyms: anthesis, blossoming, efflorescence, florescence, flowering |
| inflow | (noun) the process of flowing in | Synonyms: influx |
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| influence | (noun) causing something without any direct or apparent effort | - |
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| (noun) a power to affect persons or events especially power based on prestige etc | - |
| (noun) a cognitive factor that tends to have an effect on what you do | - |
| (noun) one having power to influence another | - |
| (noun) the effect of one thing (or person) on another | - |
| influencer | (noun) a person who has a large following on one or more social media platform that works to generate interest in contemporary social issues and/or advertise consumer products | - |
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| influenza | (noun) an acute febrile highly contagious viral disease | Synonyms: flu, grippe |
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| influx | (noun) the process of flowing in | Synonyms: inflow |
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| insufflation | (noun) an act of blowing or breathing on or into something | - |
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| (noun) (medicine) blowing air or medicated powder into the lungs (or into some other body cavity) | - |
| interreflection | (noun) reciprocal reflection between two reflecting surfaces | - |
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| isoflurane | (noun) a widely used inhalation anesthetic | - |
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| kerfuffle | (noun) a disorderly outburst or tumult | Synonyms: commotion, disruption, disturbance, flutter, hoo-ha, hoo-hah, hurly burly, to-do |
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| lactoflavin | (noun) a B vitamin that prevents skin lesions and weight loss | Synonyms: hepatoflavin, ovoflavin, riboflavin, vitamin B2, vitamin G |
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| leaflet | (noun) a thin triangular flap of a heart valve | Synonyms: cusp |
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| (noun) a small book usually having a paper cover | Synonyms: booklet, brochure, folder, pamphlet |
| (noun) part of a compound leaf | - |
| leflunomide | (noun) an anti-TNF compound (trade name Arava) that is given orally; can slow the progression of rheumatoid arthritis by slowing the proliferation of white blood cells which reduces inflammation in the synovium | Synonyms: Arava |
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| lyreflower | (noun) garden plant having deep-pink drooping heart-shaped flowers | Synonyms: bleeding heart, Dicentra spectabilis, lyre-flower |
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| mayflower | (noun) low-growing evergreen shrub of eastern North America with leathery leaves and clusters of fragrant pink or white flowers | Synonyms: Epigaea repens, trailing arbutus |
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| mayfly | (noun) slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days | Synonyms: dayfly, shadfly |
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| medfly | (noun) small black-and-white fly that damages citrus and other fruits by implanting eggs that hatch inside the fruit | Synonyms: Ceratitis capitata, Mediterranean fruit fly |
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| mefloquine | (noun) an antimalarial drug (trade name Lariam and Mephaquine) that is effective in cases that do not respond to chloroquine; said to produce harmful neuropsychiatric effects on some people | Synonyms: Lariam, mefloquine hydrochloride, Mephaquine |
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| megaflop | (noun) (computer science) a unit for measuring the speed of a computer system, one megaflops is a million floating point operations per second | Synonyms: MFLOP, million floating point operations per second |
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| microflora | (noun) microscopic plants; bacteria are often considered to be microflora | - |
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| mistflower | (noun) rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; sometimes placed in genus Eupatorium | Synonyms: ageratum, Conoclinium coelestinum, Eupatorium coelestinum, mist-flower |
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| moonflower | (noun) pantropical climber having white fragrant nocturnal flowers | Synonyms: belle de nuit, Ipomoea alba |
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| moufflon | (noun) wild mountain sheep of Corsica and Sardinia | Synonyms: mouflon, Ovis musimon |
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| mouflon | (noun) wild mountain sheep of Corsica and Sardinia | Synonyms: moufflon, Ovis musimon |
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| muffle | (noun) a kiln with an inner chamber for firing things at a low temperature | - |
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| muffler | (noun) a scarf worn around the neck | - |
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| (noun) a tubular acoustic device inserted in the exhaust system that is designed to reduce noise | Synonyms: silencer |
| (noun) a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations | Synonyms: damper |
| multiflora | (noun) vigorously growing rose having clusters of numerous small flowers; used for hedges and as grafting stock | Synonyms: baby rose, Japanese rose, multiflora rose, Rosa multiflora |
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| newsflash | (noun) a short news announcement concerning some on-going news story | Synonyms: flash, news bulletin, newsbreak |
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| oriflamme | (noun) a red or orange-red flag used as a standard by early French kings | - |
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| (noun) an inspiring symbol or ideal that serves as a rallying point in a struggle | - |
| outflow | (noun) the discharge of a fluid from some container | Synonyms: escape, leak, leakage |
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| (noun) a natural flow of ground water | Synonyms: fountain, natural spring, outpouring, spring |
| (noun) the process of flowing out | Synonyms: effluence, efflux |
| overflight | (noun) a flight by an aircraft over a particular area (especially over an area in foreign territory) | - |
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| overflow | (noun) a large flow | Synonyms: flood, outpouring |
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| (noun) the occurrence of surplus liquid (as water) exceeding the limit or capacity | Synonyms: overspill, runoff |
| ovoflavin | (noun) a B vitamin that prevents skin lesions and weight loss | Synonyms: hepatoflavin, lactoflavin, riboflavin, vitamin B2, vitamin G |
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| pasqueflower | (noun) any plant of the genus Pulsatilla; sometimes included in genus Anemone | Synonyms: pasque flower |
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| passionflower | (noun) any of various chiefly tropical American vines some bearing edible fruit | Synonyms: passionflower vine |
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| perfluorocarbon | (noun) a powerful greenhouse gas emitted during the production of aluminum | Synonyms: PFC |
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| persiflage | (noun) light teasing | - |
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| petaflop | (noun) (computer science) a unit for measuring the speed of a computer system, equal to one quadrillion floating-point operations a second. | Synonyms: PFLOPS |
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| photoflash | (noun) a lamp for providing momentary light to take a photograph | Synonyms: flash, flash bulb, flash lamp, flashbulb, flashgun |
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| photoflood | (noun) light that is a source of artificial illumination having a broad beam; used in photography | Synonyms: flood, flood lamp, floodlight |
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| piffle | (noun) trivial nonsense | Synonyms: balderdash, fiddle-faddle |
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| polytetrafluoroethylene | (noun) a material used to coat cooking utensils and in industrial applications where sticking is to be avoided | Synonyms: Teflon |
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| profligacy | (noun) dissolute indulgence in sensual pleasure | Synonyms: dissipation, dissolution, licentiousness, looseness |
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| (noun) the trait of spending extravagantly | Synonyms: extravagance, prodigality |
| profligate | (noun) a dissolute man in fashionable society | Synonyms: blood, rake, rakehell, rip, roue |
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| (noun) a recklessly extravagant consumer | Synonyms: prodigal, squanderer |
| raffle | (noun) a lottery in which the prizes are goods rather than money | - |
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| rainfly | (noun) flap consisting of a piece of canvas that can be drawn back to provide entrance to a tent | Synonyms: fly, fly sheet, tent-fly, tent flap |
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| reflation | (noun) inflation of currency after a period of deflation; restore the system to a previous state | - |
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| reflectance | (noun) the fraction of radiant energy that is reflected from a surface | Synonyms: coefficient of reflection, reflection factor, reflectivity |
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| reflection | (noun) the image of something as reflected by a mirror (or other reflective material) | Synonyms: reflexion |
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| (noun) the ability to reflect beams or rays | Synonyms: reflectivity, reflexion |
| (noun) a likeness in which left and right are reversed | Synonyms: mirror image, reflexion |
| (noun) a calm, lengthy, intent consideration | Synonyms: contemplation, musing, reflexion, rumination, thoughtfulness |
| (noun) a remark expressing careful consideration | Synonyms: observation, reflexion |
| (noun) expression without words | Synonyms: expression, manifestation, reflexion |
| (noun) the phenomenon of a propagating wave (light or sound) being thrown back from a surface | Synonyms: reflexion |
| (noun) (mathematics) a transformation in which the direction of one axis is reversed | - |
| reflectiveness | (noun) the capability of quiet thought or contemplation | Synonyms: reflectivity |
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| reflectivity | (noun) the ability to reflect beams or rays | Synonyms: reflection, reflexion |
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| (noun) the capability of quiet thought or contemplation | Synonyms: reflectiveness |
| (noun) the fraction of radiant energy that is reflected from a surface | Synonyms: coefficient of reflection, reflectance, reflection factor |
| reflectometer | (noun) a meter that measures the reflectance of a surface | - |
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| reflector | (noun) device that reflects radiation | - |
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| (noun) optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Synonyms: reflecting telescope |
| reflex | (noun) an automatic instinctive unlearned reaction to a stimulus | Synonyms: inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex action, reflex response, unconditioned reflex |
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| reflexion | (noun) the image of something as reflected by a mirror (or other reflective material) | Synonyms: reflection |
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| (noun) the ability to reflect beams or rays | Synonyms: reflection, reflectivity |
| (noun) a likeness in which left and right are reversed | Synonyms: mirror image, reflection |
| (noun) a calm, lengthy, intent consideration | Synonyms: contemplation, musing, reflection, rumination, thoughtfulness |
| (noun) a remark expressing careful consideration | Synonyms: observation, reflection |
| (noun) expression without words | Synonyms: expression, manifestation, reflection |
| (noun) the phenomenon of a propagating wave (light or sound) being thrown back from a surface | Synonyms: reflection |
| reflexive | (noun) a personal pronoun compounded with -self to show the agent's action affects the agent | Synonyms: reflexive pronoun |
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| reflexiveness | (noun) the coreferential relation between a reflexive pronoun and its antecedent | Synonyms: reflexivity |
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| (noun) (logic and mathematics) a relation such that it holds between an element and itself | Synonyms: reflexivity |
| reflexivity | (noun) the coreferential relation between a reflexive pronoun and its antecedent | Synonyms: reflexiveness |
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| (noun) (logic and mathematics) a relation such that it holds between an element and itself | Synonyms: reflexiveness |
| reflexology | (noun) massage to relieve tension by finger pressure; based on the belief that there are reflex points on the feet, hands, and head that are connected to every part of the body | - |
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| (noun) the study of reflex action as it relates to the behavior of organisms | - |
| reflux | (noun) the outward flow of the tide | Synonyms: ebb |
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| (noun) an abnormal backward flow of body fluids | - |
| reshuffle | (noun) shuffling again | Synonyms: reshuffling |
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| (noun) a redistribution of something | - |
| reshuffling | (noun) shuffling again | Synonyms: reshuffle |
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| retroflection | (noun) the act of bending backward | Synonyms: retroflexion |
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| (noun) an articulatory gesture made by turning the tip of the tongue back against the roof of the mouth | Synonyms: retroflexion |
| (noun) a turning or tilting backward of an organ or body part | Synonyms: retroflexion, retroversion |
| retroflexion | (noun) the act of bending backward | Synonyms: retroflection |
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| (noun) an articulatory gesture made by turning the tip of the tongue back against the roof of the mouth | Synonyms: retroflection |
| (noun) a turning or tilting backward of an organ or body part | Synonyms: retroflection, retroversion |
| riboflavin | (noun) a B vitamin that prevents skin lesions and weight loss | Synonyms: hepatoflavin, lactoflavin, ovoflavin, vitamin B2, vitamin G |
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| riffle | (noun) shuffling by splitting the pack and interweaving the two halves at their corners | - |
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| (noun) a small wave on the surface of a liquid | Synonyms: ripple, rippling, wavelet |
| rifle | (noun) a shoulder firearm with a long barrel and a rifled bore | - |
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| riflebird | (noun) velvety black Australian bird of paradise with green and purple iridescence on head and tail | Synonyms: Ptloris paradisea |
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| rifleman | (noun) a soldier whose weapon is a rifle | - |
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| (noun) someone skilled in the use of a rifle | - |
| rifling | (noun) the cutting of spiral grooves on the inside of the barrel of a firearm | Synonyms: grooving |
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| ruffle | (noun) a noisy fight | Synonyms: affray, disturbance, fray |
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| (noun) a high tight collar | Synonyms: choker, neck ruff, ruff |
| (noun) a strip of pleated material used as a decoration or a trim | Synonyms: flounce, frill, furbelow |
| safflower | (noun) thistlelike Eurasian plant widely grown for its red or orange flower heads and seeds that yield a valuable oil | Synonyms: Carthamus tinctorius, false saffron |
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| sandfly | (noun) any of various small dipterous flies; bloodsucking females can transmit sandfly fever and leishmaniasis | Synonyms: Phlebotomus papatasii, sand fly |
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| sawfly | (noun) insect whose female has a saw-like ovipositor for inserting eggs into the leaf or stem tissue of a host plant | - |
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| scofflaw | (noun) one who habitually ignores the law and does not answer court summonses | - |
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| scuffle | (noun) disorderly fighting | Synonyms: dogfight, hassle, rough-and-tumble, tussle |
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| (noun) an unceremonious and disorganized struggle | Synonyms: scramble |
| (noun) a hoe that is used by pushing rather than pulling | Synonyms: Dutch hoe, scuffle hoe |
| selflessness | (noun) acting with less concern for yourself than for the success of the joint activity | Synonyms: self-sacrifice |
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| (noun) the quality of unselfish concern for the welfare of others | Synonyms: altruism |
| semifluidity | (noun) a property midway between a solid and a liquid | - |
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| shadflower | (noun) annual weed of Europe and North America having a rosette of basal leaves and tiny flowers followed by oblong seed capsules | Synonyms: Draba verna, shad-flower, whitlow grass |
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| shadfly | (noun) slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days | Synonyms: dayfly, mayfly |
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| shellflower | (noun) showy perennial of marshlands of eastern and central North America having waxy lanceolate leaves and flower with lower part creamy white and upper parts pale pink to deep purple | Synonyms: Chelone glabra, shell-flower, snake-head, snakehead, turtlehead |
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| (noun) cultivated for its shining oblong leaves and arching clusters of white flowers with pink shading and crinkled yellow lips with variegated magenta stripes | Synonyms: Alpinia speciosa, Alpinia Zerumbet, Languas speciosa, shall-flower, shell ginger |
| shoofly | (noun) a child's rocking chair with the seat built between two flat sides that are shaped to resemble an animal (such as a swan or duck) | - |
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| (noun) an undercover police officer who investigates other policemen | - |
| shuffle | (noun) the act of mixing cards haphazardly | Synonyms: make, shuffling |
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| (noun) walking with a slow dragging motion without lifting your feet | Synonyms: shamble, shambling, shuffling |
| shuffleboard | (noun) a game in which players use long sticks to shove wooden disks onto the scoring area marked on a smooth surface | Synonyms: shovelboard |
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| shuffler | (noun) someone who walks without raising the feet | - |
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| (noun) the card player who shuffles the cards | - |
| shuffling | (noun) the act of mixing cards haphazardly | Synonyms: make, shuffle |
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| (noun) walking with a slow dragging motion without lifting your feet | Synonyms: shamble, shambling, shuffle |
| skiffle | (noun) a style of popular music in the 1950s; based on American folk music and played on guitars and improvised percussion instruments | - |
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| skinflint | (noun) a selfish person who is unwilling to give or spend | Synonyms: churl, niggard, scrooge |
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| slumpflation | (noun) a situation in which economic depression is combined with increasing inflation. | - |
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| snaffle | (noun) a simple jointed bit for a horse; without a curb | Synonyms: snaffle bit |
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