| afterglow | (noun) the pleasure of remembering some pleasant event | - |
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| (noun) a glow sometimes seen in the sky after sunset | - |
| airflow | (noun) the flow of air | Synonyms: air flow, flow of air |
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| allowance | (noun) the act of allowing | - |
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| (noun) a permissible difference; allowing some freedom to move within limits | Synonyms: leeway, margin, tolerance |
| (noun) an amount allowed or granted (as during a given period) | - |
| (noun) an amount added or deducted on the basis of qualifying circumstances | Synonyms: adjustment |
| (noun) a sum granted as reimbursement for expenses | - |
| (noun) a reserve fund created by a charge against profits in order to provide for changes in the value of a company's assets | Synonyms: allowance account, valuation account, valuation reserve |
| backflow | (noun) a flow that returns toward its source | Synonyms: backflowing |
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| backflowing | (noun) a flow that returns toward its source | Synonyms: backflow |
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| bedfellow | (noun) a person with whom you share a bed | Synonyms: bedmate |
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| (noun) a temporary associate | - |
| bellflower | (noun) any of various plants of the genus Campanula having blue or white bell-shaped flowers | Synonyms: campanula |
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| bellow | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellowing, holla, holler, hollering, hollo, holloa, roar, roaring, yowl |
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| bellower | (noun) someone who communicates vocally in a very loud voice | Synonyms: bawler, roarer, screamer, screecher, shouter, yeller |
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| bellowing | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellow, holla, holler, hollering, hollo, holloa, roar, roaring, yowl |
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| bellows | (noun) (used in the plural) a mechanical device that blows a strong current of air; used to make a fire burn more fiercely or to sound a musical instrument | - |
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| billow | (noun) a large sea wave | Synonyms: surge |
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| blow | (noun) a powerful stroke with the fist or a weapon | - |
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| (noun) forceful exhalation through the nose or mouth | Synonyms: puff |
| (noun) street names for cocaine | Synonyms: C, coke, nose candy, snow |
| (noun) an impact (as from a collision) | Synonyms: bump |
| (noun) an unpleasant or disappointing surprise | Synonyms: shock |
| (noun) an unfortunate happening that hinders or impedes; something that is thwarting or frustrating | Synonyms: black eye, reversal, reverse, setback |
| (noun) a strong current of air | Synonyms: blast, gust |
| blowback | (noun) Blowback is a system of operation for self-loading firearms that obtains energy from the motion of the cartridge case as it is pushed to the rear by expanding gases created by the ignition of the propellant charge. | - |
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| (noun) misinformation resulting from the recirculation into the source country of disinformation previously planted abroad by that country's intelligence service | - |
| (noun) the backward escape of gases and unburned gunpowder after a gun is fired | Synonyms: backfire |
| blowball | (noun) any of several herbs of the genus Taraxacum having long tap roots and deeply notched leaves and bright yellow flowers followed by fluffy seed balls | Synonyms: dandelion |
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| blowbang | (noun) A sexual activity where fellatio is performed on multiple men | - |
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| blower | (noun) large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals | Synonyms: cetacean, cetacean mammal |
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| (noun) a device that produces a current of air | - |
| (noun) a fan run by an electric motor | Synonyms: electric fan |
| blowfish | (noun) any of numerous marine fishes whose elongated spiny body can inflate itself with water or air to form a globe; several species contain a potent nerve poison; closely related to spiny puffers | Synonyms: globefish, puffer, pufferfish |
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| (noun) delicacy that is highly dangerous because of a potent nerve poison in ovaries and liver | Synonyms: puffer, pufferfish, sea squab |
| blowfly | (noun) large usually hairy metallic blue or green fly; lays eggs in carrion or dung or wounds | Synonyms: blow fly |
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| blowgun | (noun) a tube through which darts can be shot by blowing | Synonyms: blow tube, blowpipe, blowtube |
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| blowhard | (noun) a very boastful and talkative person | Synonyms: boaster, braggart, bragger, line-shooter, vaunter |
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| blowhole | (noun) a hole for the escape of gas or air | Synonyms: vent-hole, vent, venthole |
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| (noun) the spiracle of a cetacean located far back on the skull | - |
| blowing | (noun) processing that involves blowing a gas | - |
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| blowjob | (noun) slang for fellatio | Synonyms: cock sucking |
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| blowlamp | (noun) a burner that mixes air and gas to produce a very hot flame | Synonyms: blowtorch, torch |
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| blowout | (noun) a gay festivity | Synonyms: gala, gala affair, jamboree |
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| (noun) a sudden malfunction of a part or apparatus | - |
| (noun) an easy victory | Synonyms: laugher, romp, runaway, shoo-in, walkaway |
| blowpipe | (noun) a tube that directs air or gas into a flame to concentrate heat | Synonyms: blow tube, blowtube |
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| (noun) a tube through which darts can be shot by blowing | Synonyms: blow tube, blowgun, blowtube |
| blowtorch | (noun) a burner that mixes air and gas to produce a very hot flame | Synonyms: blowlamp, torch |
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| blowtube | (noun) a tube that directs air or gas into a flame to concentrate heat | Synonyms: blow tube, blowpipe |
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| (noun) a tube through which darts can be shot by blowing | Synonyms: blow tube, blowgun, blowpipe |
| blowup | (noun) a photographic print that has been enlarged | Synonyms: enlargement, magnification |
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| (noun) an unrestrained expression of emotion | Synonyms: ebullition, effusion, gush, outburst |
| (noun) a violent release of energy caused by a chemical or nuclear reaction | Synonyms: detonation, explosion |
| bungalow | (noun) a small house with a single story | Synonyms: cottage |
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| butterflower | (noun) any of various plants of the genus Ranunculus | Synonyms: butter-flower, buttercup, crowfoot, goldcup, kingcup |
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| callowness | (noun) lacking and evidencing lack of experience of life | Synonyms: jejuneness, juvenility |
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| cauliflower | (noun) compact head of white undeveloped flowers | - |
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| (noun) a plant having a large edible head of crowded white flower buds | Synonyms: Brassica oleracea botrytis |
| cheeseflower | (noun) erect or decumbent Old World perennial with axillary clusters of rosy-purple flowers; introduced in United States | Synonyms: cheese, high mallow, Malva sylvestris, tall mallow |
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| chiggerflower | (noun) erect perennial of eastern and southern United States having showy orange flowers | Synonyms: Asclepias tuberosa, butterfly weed, chigger flower, Indian paintbrush, orange milkweed, pleurisy root, tuber root |
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| clowder | (noun) a group of cats | - |
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| clown | (noun) a person who amuses others by ridiculous behavior | Synonyms: buffoon, goof, goofball, merry andrew |
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| (noun) a rude or vulgar fool | Synonyms: buffoon |
| clowning | (noun) acting like a clown or buffoon | Synonyms: buffoonery, frivolity, harlequinade, japery, prank |
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| (noun) a comic incident or series of incidents | Synonyms: comedy, drollery, funniness |
| coneflower | (noun) any of various perennials of the eastern United States having thick rough leaves and long-stalked showy flowers with drooping rays and a conelike center | - |
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| (noun) any of various plants of the genus Rudbeckia cultivated for their large usually yellow daisies with prominent central cones | - |
| (noun) a wildflower of the genus Ratibida | - |
| cornflower | (noun) an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers | Synonyms: bachelor's button, bluebottle, Centaurea cyanus |
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| (noun) plant of southern and southeastern United States grown for its yellow flowers that can be dried | Synonyms: strawflower, Uvularia grandiflora |
| counterblow | (noun) a return blow; a retaliatory blow | - |
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| counterglow | (noun) a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space | Synonyms: gegenschein |
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| cuckooflower | (noun) a bitter cress of Europe and America | Synonyms: Cardamine pratensis, cuckoo flower, lady's smock, meadow cress |
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| cupflower | (noun) any of various plants of the genus Nierembergia having upturned bell-shaped flowers | Synonyms: nierembergia |
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| (noun) Mexican evergreen climbing plant having large solitary funnel-shaped fragrant yellow flowers with purple-brown ridges in the throat | Synonyms: chalice vine, Solandra guttata, trumpet flower |
| dayflower | (noun) any plant of the family Commelinaceae | Synonyms: spiderwort |
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| deathblow | (noun) the blow that kills (usually mercifully) | Synonyms: coup de grace |
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| fallow | (noun) cultivated land that is not seeded for one or more growing seasons | - |
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| fellow | (noun) a boy or man | Synonyms: blighter, bloke, chap, cuss, fella, feller, gent, lad |
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| (noun) a man who is the lover of a man or woman | Synonyms: beau, boyfriend, swain |
| (noun) a friend who is frequently in the company of another | Synonyms: associate, companion, comrade, familiar |
| (noun) a person who is member of one's class or profession | Synonyms: colleague, confrere |
| (noun) an informal form of address for a man | Synonyms: buster, dude |
| (noun) a member of a learned society | - |
| (noun) one of a pair | Synonyms: mate |
| fellowship | (noun) an association of people who share common beliefs or activities | Synonyms: family |
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| (noun) money granted (by a university or foundation or other agency) for advanced study or research | - |
| (noun) the state of being with someone | Synonyms: companionship, company, society |
| fingerflower | (noun) tall leafy European biennial or perennial having spectacular clusters of large tubular pink-purple flowers; leaves yield drug digitalis and are poisonous to livestock | Synonyms: common foxglove, Digitalis purpurea, fairy bell, finger-flower, finger-root, fingerroot |
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| flameflower | (noun) plant with fleshy roots and erect stems with narrow succulent leaves and one reddish-orange flower in each upper leaf axil; southwestern United States; Indians once cooked the fleshy roots | Synonyms: flame-flower, flame flower, Talinum aurantiacum |
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| (noun) a plant of the genus Kniphofia having long grasslike leaves and tall scapes of red or yellow drooping flowers | Synonyms: flame-flower, flame flower, kniphofia, tritoma |
| flow | (noun) the act of flowing or streaming; continuous progression | Synonyms: stream |
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| (noun) the motion characteristic of fluids (liquids or gases) | Synonyms: flowing |
| (noun) dominant course (suggestive of running water) of successive events or ideas | Synonyms: current, stream |
| (noun) any uninterrupted stream or discharge | - |
| (noun) the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause | Synonyms: catamenia, menses, menstruation, menstruum, period |
| (noun) something that resembles a flowing stream in moving continuously | Synonyms: stream |
| (noun) the amount of fluid that flows in a given time | Synonyms: flow rate, rate of flow |
| flowage | (noun) the act of flooding; filling to overflowing | Synonyms: flood |
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| (noun) a body of water that has been created by deliberately flooding an area | - |
| (noun) gradual internal motion or deformation of a solid body (as by heat) | - |
| flowchart | (noun) a diagram of the sequence of operations in a computer program or an accounting system | Synonyms: flow chart, flow diagram, flow sheet |
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| flower | (noun) a plant cultivated for its blooms or blossoms | - |
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| (noun) reproductive organ of angiosperm plants especially one having showy or colorful parts | Synonyms: bloom, blossom |
| (noun) the period of greatest prosperity or productivity | Synonyms: bloom, blossom, efflorescence, flush, heyday, peak, prime |
| flowerbed | (noun) a bed in which flowers are growing | Synonyms: bed of flowers, flower bed |
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| floweret | (noun) a diminutive flower (especially one that is part of a composite flower) | Synonyms: floret |
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| flowering | (noun) the time and process of budding and unfolding of blossoms | Synonyms: anthesis, blossoming, efflorescence, florescence, inflorescence |
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| (noun) a developmental process | Synonyms: unfolding |
| flowerpot | (noun) a container in which plants are cultivated | Synonyms: pot |
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| flowing | (noun) the motion characteristic of fluids (liquids or gases) | Synonyms: flow |
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| foamflower | (noun) stoloniferous white-flowered spring-blooming woodland plant | Synonyms: coolwart, false miterwort, false mitrewort, Tiarella cordifolia |
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| follower | (noun) a person who accepts the leadership of another | - |
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| (noun) someone who travels behind or pursues another | - |
| followers | (noun) a group of followers or enthusiasts | Synonyms: following |
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| following | (noun) the act of pursuing in an effort to overtake or capture | Synonyms: chase, pursual, pursuit |
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| (noun) a group of followers or enthusiasts | Synonyms: followers |
| followup | (noun) a subsequent examination of a patient for the purpose of monitoring earlier treatment | Synonyms: follow-up, reexamination, review |
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| (noun) an activity that continues something that has already begun or that repeats something that has already been done | Synonyms: follow-up |
| (noun) a piece of work that exploits or builds on earlier work | Synonyms: follow-up |
| furbelow | (noun) a strip of pleated material used as a decoration or a trim | Synonyms: flounce, frill, ruffle |
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| gallows | (noun) an instrument of execution consisting of a wooden frame from which a condemned person is executed by hanging | - |
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| gillyflower | (noun) Eurasian plant with pink to purple-red spice-scented usually double flowers; widely cultivated in many varieties and many colors | Synonyms: carnation, clove pink, Dianthus caryophyllus |
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| (noun) any of several Old World plants cultivated for their brightly colored flowers | Synonyms: stock |
| glassblower | (noun) someone skilled in blowing bottles from molten glass | - |
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| globeflower | (noun) any of several plants of the genus Trollius having globose yellow flowers | Synonyms: globe flower |
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| glow | (noun) light from nonthermal sources | Synonyms: luminescence |
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| (noun) an appearance of reflected light | Synonyms: gleam, gleaming, lambency |
| (noun) a feeling of considerable warmth | - |
| (noun) the phenomenon of light emission by a body as its temperature is raised | Synonyms: incandescence |
| (noun) the amount of electromagnetic radiation leaving or arriving at a point on a surface | Synonyms: glowing, radiance |
| (noun) a steady even light without flames | - |
| (noun) an alert and refreshed state | Synonyms: freshness |
| glower | (noun) an angry stare | Synonyms: glare |
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| glowing | (noun) the amount of electromagnetic radiation leaving or arriving at a point on a surface | Synonyms: glow, radiance |
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| glowworm | (noun) the luminous larva or wingless grub-like female of a firefly | - |
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| helmetflower | (noun) a herbaceous plant of the genus Scutellaria which has a calyx that, when inverted, resembles a helmet with its visor raised | Synonyms: skullcap |
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| (noun) a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite | Synonyms: Aconitum napellus, helmet flower, monkshood |
| (noun) any of several orchids of the genus Coryanthes having racemes of a few musky-scented waxy flowers with a helmet-shaped lip process | Synonyms: helmet orchid |
| hollow | (noun) a depression hollowed out of solid matter | Synonyms: hole |
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| (noun) a small valley between mountains | Synonyms: holler |
| (noun) a cavity or space in something | - |
| holloware | (noun) silverware serving dishes | Synonyms: hollowware |
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| hollowness | (noun) the property of having a sunken area | - |
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| (noun) the quality of not being open or truthful; deceitful or hypocritical | Synonyms: falseness, insincerity |
| (noun) the state of being hollow: having an empty space within | - |
| hollowware | (noun) silverware serving dishes | Synonyms: holloware |
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| honeyflower | (noun) Australian shrub whose flowers yield honey copiously | Synonyms: honey-flower, Protea mellifera |
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| (noun) erect bushy shrub of eastern Australia having terminal clusters of red flowers yielding much nectar | Synonyms: honey-flower, Lambertia formosa, mountain devil |
| inflow | (noun) the process of flowing in | Synonyms: influx |
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| kilowatt | (noun) a unit of power equal to 1000 watts | Synonyms: kW |
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| low | (noun) the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving | Synonyms: first, first gear, low gear |
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| (noun) a low level or position or degree | - |
| (noun) an air mass of lower pressure; often brings precipitation | Synonyms: depression |
| lowan | (noun) Australian mound bird; incubates eggs naturally in sandy mounds | Synonyms: leipoa, Leipoa ocellata, mallee fowl |
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| lowboy | (noun) a low chest or table with drawers and supported on four legs | - |
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| lowbrow | (noun) a person who is uninterested in intellectual pursuits | Synonyms: anti-intellectual, philistine |
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| lower | (noun) the lower of two berths | Synonyms: lower berth |
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| lowercase | (noun) the characters that were once kept in bottom half of a compositor's type case | Synonyms: lower-case letter, minuscule, small letter |
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| lowerclassman | (noun) an undergraduate who is not yet a senior | Synonyms: underclassman |
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| lowering | (noun) the act of causing to become less | - |
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| (noun) the act of causing something to move to a lower level | Synonyms: letting down |
| lowland | (noun) low level country | - |
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| lowlife | (noun) a person who is deemed to be despicable or contemptible | Synonyms: bum, crumb, dirty dog, git, puke, rat, rotter, scum bag, scumbag, skunk, so-and-so, stinker, stinkpot |
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| lowliness | (noun) a position of inferior status; low in station or rank or fortune or estimation | Synonyms: low status, lowness |
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| (noun) the state of being humble and unimportant | Synonyms: humbleness, obscureness, unimportance |
| lowness | (noun) the quality of being low; lacking height | - |
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| (noun) a low or small degree of any quality (amount or force or temperature etc.) | - |
| (noun) a feeling of low spirits | Synonyms: dejectedness, dispiritedness, downheartedness, low-spiritedness |
| (noun) a position of inferior status; low in station or rank or fortune or estimation | Synonyms: low status, lowliness |
| lyreflower | (noun) garden plant having deep-pink drooping heart-shaped flowers | Synonyms: bleeding heart, Dicentra spectabilis, lyre-flower |
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| mallow | (noun) any of various plants of the family Malvaceae | - |
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| marshmallow | (noun) spongy confection made of gelatin and sugar and corn syrup and dusted with powdered sugar | - |
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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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| mellowing | (noun) the process of becoming mellow | - |
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