| blab | (verb) divulge confidential information or secrets | Synonyms: babble, babble out, blab out, let the cat out of the bag, peach, sing, spill the beans, talk, tattle |
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| (verb) speak (about unimportant matters) rapidly and incessantly | Synonyms: blabber, chatter, clack, gabble, gibber, maunder, palaver, piffle, prate, prattle, tattle, tittle-tattle, twaddle |
| blabber | (noun) one who reveals confidential information to the police or other authority | Synonyms: betrayer, informer, rat, squealer |
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| (verb) speak (about unimportant matters) rapidly and incessantly | Synonyms: blab, chatter, clack, gabble, gibber, maunder, palaver, piffle, prate, prattle, tattle, tittle-tattle, twaddle |
| blabbermouth | (noun) someone who gossips indiscreetly | Synonyms: talebearer, taleteller, tattler, tattletale, telltale |
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| blabbermouthed | (adjective) prone to communicate confidential information | Synonyms: leaky, talebearing, tattling |
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| (adjective) unwisely talking too much | Synonyms: bigmouthed, blabby, talkative |
| blabby | (adjective) unwisely talking too much | Synonyms: bigmouthed, blabbermouthed, talkative |
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| black | (adjective) being of the achromatic color of maximum darkness; having little or no hue owing to absorption of almost all incident light | - |
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| (adjective) of or belonging to a racial group especially of sub-Saharan African origin | - |
| (adjective) marked by anger or resentment or hostility | - |
| (adjective) (of the face) made black especially as with suffused blood | Synonyms: blackened |
| (adjective) (of intelligence operations) deliberately misleading | - |
| (adjective) extremely dark | Synonyms: pitch-black, pitch-dark |
| (adjective) soiled with dirt or soot | Synonyms: smutty |
| (adjective) (used of conduct or character) deserving or bringing disgrace or shame | Synonyms: disgraceful, ignominious, inglorious, opprobrious, shameful |
| (adjective) stemming from evil characteristics or forces; wicked or dishonorable | Synonyms: dark, sinister |
| (adjective) offering little or no hope | Synonyms: bleak, dim |
| (adjective) distributed or sold illicitly | Synonyms: black-market, bootleg, contraband, smuggled |
| (adjective) harshly ironic or sinister | Synonyms: grim, mordant |
| (adjective) (of coffee) without cream or sugar | - |
| (adjective) (of events) having extremely unfortunate or dire consequences; bringing ruin | Synonyms: calamitous, disastrous, fatal, fateful |
| (noun) black clothing (worn as a sign of mourning) | - |
| (noun) (board games) the darker pieces | - |
| (noun) the quality or state of the achromatic color of least lightness (bearing the least resemblance to white) | Synonyms: blackness, inkiness |
| (noun) total absence of light | Synonyms: blackness, lightlessness, pitch blackness, total darkness |
| (verb) make or become black | Synonyms: blacken, melanise, melanize |
| blackamoor | (noun) a person with dark skin who comes from Africa (or whose ancestors came from Africa) | Synonyms: Black person |
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| blackball | (noun) the act of excluding someone by a negative vote or veto | Synonyms: barring |
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| (verb) expel from a community or group | Synonyms: ban, banish, cast out, ostracise, ostracize, shun |
| (verb) vote against; refuse to endorse; refuse to assent | Synonyms: negative, veto |
| blackbeetle | (noun) dark brown cockroach originally from orient now nearly cosmopolitan in distribution | Synonyms: Asiatic cockroach, Blatta orientalis, oriental cockroach, oriental roach |
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| blackberry | (noun) large sweet black or very dark purple edible aggregate fruit of any of various bushes of the genus Rubus | - |
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| (noun) bramble with sweet edible black or dark purple berries that usually do not separate from the receptacle | Synonyms: blackberry bush |
| (verb) pick or gather blackberries | - |
| blackbird | (noun) any bird of the family Icteridae whose male is black or predominantly black | Synonyms: New World blackbird |
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| (noun) common black European thrush | Synonyms: European blackbird, merl, merle, ousel, ouzel, Turdus merula |
| blackboard | (noun) sheet of slate; for writing with chalk | Synonyms: chalkboard |
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| blackbody | (noun) a hypothetical object capable of absorbing all the electromagnetic radiation falling on it | Synonyms: black body, full radiator |
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| blackbuck | (noun) common Indian antelope with a dark back and spiral horns | Synonyms: Antilope cervicapra, black buck |
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| blackcap | (noun) small brownish-grey warbler with a black crown | Synonyms: Silvia atricapilla |
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| (noun) chickadee having a dark crown | Synonyms: black-capped chickadee, Parus atricapillus |
| (noun) small black-headed European gull | Synonyms: Larus ridibundus, laughing gull, pewit, pewit gull |
| (noun) raspberry native to eastern North America having black thimble-shaped fruit | Synonyms: black raspberry, blackcap raspberry, Rubus occidentalis, thimbleberry |
| blackcock | (noun) male black grouse | Synonyms: black cock |
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| blackdamp | (noun) the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life | Synonyms: chokedamp |
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| blacken | (verb) make or become black | Synonyms: black, melanise, melanize |
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| (verb) burn slightly and superficially so as to affect color | Synonyms: char, scorch, sear |
| blackened | (adjective) (of the face) made black especially as with suffused blood | Synonyms: black |
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| (adjective) darkened by smoke | - |
| blackening | (noun) changing to a darker color | Synonyms: darkening |
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| blackface | (noun) the makeup (usually burnt cork) used by a performer in order to imitate a Negro | - |
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| blackfish | (noun) female salmon that has recently spawned | - |
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| (noun) small dark-colored whale of the Atlantic coast of the United States; the largest male acts as pilot or leader for the school | Synonyms: black whale, common blackfish, Globicephala melaena, pilot whale |
| (noun) large dark-colored food fish of the Atlantic coast of North America | Synonyms: tautog, Tautoga onitis |
| blackfly | (noun) small blackish stout-bodied biting fly having aquatic larvae; sucks the blood of birds as well as humans and other mammals | Synonyms: black fly, buffalo gnat |
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| (noun) blackish aphid that infests e.g. beans and sugar beets | Synonyms: Aphis fabae, bean aphid |
| blackguard | (noun) someone who is morally reprehensible | Synonyms: bounder, cad, dog, heel, hound |
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| (verb) use foul or abusive language towards | Synonyms: abuse, clapperclaw, shout |
| (verb) subject to laughter or ridicule | Synonyms: guy, jest at, laugh at, make fun, poke fun, rib, ridicule, roast |
| blackguardly | (adjective) lacking principles or scruples | Synonyms: rascally, roguish, scoundrelly |
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| blackhead | (noun) a black-tipped plug clogging a pore of the skin | Synonyms: comedo |
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| blackheart | (noun) heart cherry with dark flesh and skin | Synonyms: blackheart cherry |
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| (noun) any of various diseases in which the central tissues blacken | - |
| blacking | (noun) a substance used to produce a shiny protective surface on footwear | Synonyms: shoe polish |
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| blackish | (adjective) of something that is somewhat black | - |
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| blackjack | (noun) a gambling game using cards; the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21 | Synonyms: twenty-one, vingt-et-un |
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| (noun) a piece of metal covered by leather with a flexible handle; used for hitting people | Synonyms: cosh, sap |
| (noun) a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship | Synonyms: black flag, Jolly Roger, pirate flag |
| (noun) a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets | Synonyms: blackjack oak, jack oak, Quercus marilandica |
| (verb) exert pressure on someone through threats | Synonyms: blackmail, pressure |
| blacklead | (verb) cover with graphite | - |
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| blackleg | (noun) someone who works (or provides workers) during a strike | Synonyms: rat, scab, strikebreaker |
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| (verb) take the place of work of someone on strike | Synonyms: fink, rat, scab |
| blacklist | (noun) a list of people who are out of favor | Synonyms: black book, shitlist |
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| (verb) put on a blacklist so as to banish or cause to be boycotted | - |
| blackmail | (noun) extortion of money by threats to divulge discrediting information | - |
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| (verb) obtain through threats | - |
| (verb) exert pressure on someone through threats | Synonyms: blackjack, pressure |
| blackmailer | (noun) a criminal who extorts money from someone by threatening to expose embarrassing information about them | Synonyms: extortioner, extortionist |
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| blackness | (noun) the quality or state of the achromatic color of least lightness (bearing the least resemblance to white) | Synonyms: black, inkiness |
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| (noun) total absence of light | Synonyms: black, lightlessness, pitch blackness, total darkness |
| blackout | (noun) a momentary loss of consciousness | - |
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| (noun) partial or total loss of memory | Synonyms: amnesia, memory loss |
| (noun) the failure of electric power for a general region | - |
| (noun) darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft) | Synonyms: brownout, dimout |
| (noun) a suspension of radio or tv broadcasting | - |
| blackpoll | (noun) North American warbler having a black-and-white head | Synonyms: Dendroica striate |
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| blackseed | (noun) grass native to West Indies but common in southern United States having tufted wiry stems often infested with a dark fungus | Synonyms: carpet grass, smut grass, Sporobolus poiretii |
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| blacksmith | (noun) a smith who forges and shapes iron with a hammer and anvil | - |
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| blacksnake | (noun) blackish racer of the eastern United States that grows to six feet | Synonyms: black racer, Coluber constrictor |
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| (noun) large harmless shiny black North American snake | Synonyms: black rat snake, Elaphe obsoleta, mountain blacksnake, pilot blacksnake |
| blacktail | (noun) mule deer of western Rocky Mountains | Synonyms: black-tailed deer, blacktail deer, Odocoileus hemionus columbianus |
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| blackthorn | (noun) erect and almost thornless American hawthorn with somewhat pear-shaped berries | Synonyms: Crataegus calpodendron, Crataegus tomentosa, pear haw, pear hawthorn |
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| (noun) a thorny Eurasian bush with plumlike fruits | Synonyms: Prunus spinosa, sloe |
| blacktop | (noun) a black bituminous material used for paving roads or other areas; usually spread over crushed rock | Synonyms: blacktopping |
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| (verb) coat with blacktop | - |
| blacktopping | (noun) a black bituminous material used for paving roads or other areas; usually spread over crushed rock | Synonyms: blacktop |
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| blackwash | (noun) a wash that colors a surface black | - |
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| (noun) a mixture of calomel and limewater that is used on syphilitic sores | Synonyms: black lotion |
| (noun) an attack intended to ruin someone's reputation | Synonyms: assassination, character assassination |
| (verb) color with blackwash | - |
| (verb) bring (information) out of concealment | - |
| 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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| blackwood | (noun) any of several hardwood trees yielding very dark-colored wood | Synonyms: blackwood tree |
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| (noun) very dark wood of any of several blackwood trees | - |
| bladder | (noun) a bag that fills with air | - |
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| (noun) a distensible membranous sac (usually containing liquid or gas) | Synonyms: vesica |
| bladderlike | (adjective) resembling a bladder | Synonyms: bladdery |
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| bladdernose | (noun) medium-sized blackish-grey seal with large inflatable sac on the head; of Arctic and northern Atlantic waters | Synonyms: Cystophora cristata, hooded seal |
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| bladderpod | (noun) any of several hairy North American herbs having yellow racemose flowers and inflated pods | - |
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| (noun) any of several plants of the genus Physaria having racemose yellow flowers and inflated pods | - |
| (noun) annual or perennial herbs with inflated seed pods; some placed in genus Lesquerella | - |
| (noun) North American wild lobelia having small blue flowers and inflated capsules formerly used as an antispasmodic | Synonyms: Indian tobacco, Lobelia inflata |
| bladderwort | (noun) any of numerous aquatic carnivorous plants of the genus Utricularia some of whose leaves are modified as small urn-shaped bladders that trap minute aquatic animals | - |
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| bladderwrack | (noun) a common rockweed used in preparing kelp and as manure | Synonyms: black rockweed, bladder fucus, Fucus vesiculosus, tang |
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| (noun) similar to and found with black rockweed | Synonyms: Ascophyllum nodosum |
| bladdery | (adjective) resembling a bladder | Synonyms: bladderlike |
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| blade | (noun) the flat part of a tool or weapon that (usually) has a cutting edge | - |
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| (noun) a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard | Synonyms: brand, steel, sword |
| (noun) flat surface that rotates and pushes against air or water | Synonyms: vane |
| (noun) the part of the skate that slides on the ice | - |
| (noun) a broad flat body part (as of the shoulder or tongue) | - |
| (noun) a cut of beef from the shoulder blade | - |
| (noun) something long and thin resembling a blade of grass | - |
| (noun) a dashing young man | - |
| (noun) especially a leaf of grass or the broad portion of a leaf as distinct from the petiole | Synonyms: leaf blade |
| bladed | (adjective) bearing or characterized by a blade or sword; often used in combination | - |
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| (adjective) having a blade or blades; often used in combination | - |
| (adjective) composed of thin flat plates resembling a knife blade | - |
| bladelike | (adjective) shaped like a sword blade | Synonyms: ensiform, sword-shaped, swordlike |
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| blae | (adjective) of bluish-black or grey-blue | - |
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| blaeberry | (noun) erect European blueberry having solitary flowers and blue-black berries | Synonyms: bilberry, Viccinium myrtillus, whinberry, whortleberry |
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| blah | (noun) pompous or pretentious talk or writing | Synonyms: bombast, claptrap, fustian, rant |
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| blahs | (noun) a general feeling of boredom and dissatisfaction | - |
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| blain | (noun) an inflammatory swelling or sore | - |
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| blamable | (adjective) deserving blame or censure as being wrong or evil or injurious | Synonyms: blameable, blameful, blameworthy, censurable, culpable |
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| blame | (adjective) expletives used informally as intensifiers | Synonyms: blamed, blasted, blessed, damn, damned, darned, deuced, goddam, goddamn, goddamned, infernal |
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| (noun) a reproach for some lapse or misdeed | Synonyms: rap |
| (noun) an accusation that you are responsible for some lapse or misdeed | Synonyms: incrimination, inculpation |
| (verb) attribute responsibility to | Synonyms: charge |
| (verb) put or pin the blame on | Synonyms: fault |
| (verb) harass with constant criticism | Synonyms: find fault, pick |
| blameable | (adjective) deserving blame or censure as being wrong or evil or injurious | Synonyms: blamable, blameful, blameworthy, censurable, culpable |
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| blamed | (adjective) expletives used informally as intensifiers | Synonyms: blame, blasted, blessed, damn, damned, darned, deuced, goddam, goddamn, goddamned, infernal |
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| blameful | (adjective) deserving blame or censure as being wrong or evil or injurious | Synonyms: blamable, blameable, blameworthy, censurable, culpable |
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| blameless | (adjective) free of guilt; not subject to blame | Synonyms: inculpable, irreproachable, unimpeachable |
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| blamelessly | (adverb) in an irreproachable and blameless manner | Synonyms: irreproachably |
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| blamelessness | (noun) a state of innocence | Synonyms: guiltlessness, inculpability, inculpableness |
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| blameworthiness | (noun) a state of guilt | Synonyms: culpability, culpableness |
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| blameworthy | (adjective) deserving blame or censure as being wrong or evil or injurious | Synonyms: blamable, blameable, blameful, censurable, culpable |
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| blanc | (noun) a white sauce of fat, broth, and vegetables (used especially with braised meat) | - |
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| blanch | (verb) turn pale, as if in fear | Synonyms: blench, pale |
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| (verb) cook (vegetables) briefly | Synonyms: parboil |
| blanched | (adjective) anemic looking from illness or emotion | Synonyms: ashen, bloodless, livid, white |
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| (adjective) (especially of plants) developed without chlorophyll by being deprived of light | Synonyms: etiolate, etiolated |
| blancmange | (noun) sweet almond-flavored milk pudding thickened with gelatin or cornstarch; usually molded | - |
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| bland | (adjective) smoothly agreeable and courteous with a degree of sophistication | Synonyms: politic, smooth, suave |
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| (adjective) lacking taste or flavor or tang | Synonyms: flat, flavorless, flavourless, insipid, savorless, savourless, vapid |
| (adjective) lacking stimulating characteristics; uninteresting | Synonyms: flat |
| blandish | (verb) praise somewhat dishonestly | Synonyms: flatter |
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| blandishment | (noun) the act of urging by means of teasing or flattery | Synonyms: wheedling |
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| (noun) flattery intended to persuade | Synonyms: cajolery, palaver |
| blandly | (adverb) in a bland manner | - |
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| blandness | (noun) lacking any distinctive or interesting taste property | Synonyms: insipidity, insipidness |
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| (noun) the quality of being bland and gracious or ingratiating in manner | Synonyms: smoothness, suaveness, suavity |
| (noun) the trait of exhibiting no personal embarrassment or concern | - |
| blank | (adjective) (of a surface) not written or printed on | Synonyms: clean, white |
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| (adjective) not charged with a bullet | - |
| (adjective) complete and absolute | Synonyms: utter |
| (adjective) without comprehension | - |
| (noun) a cartridge containing an explosive charge but no bullet | Synonyms: blank shell, dummy |
| (noun) a piece of material ready to be made into something | - |
| (noun) a blank gap or missing part | Synonyms: lacuna |
| (noun) a blank character used to separate successive words in writing or printing | Synonyms: space |
| (verb) keep the opposing (baseball) team from winning | - |
| blanket | (adjective) broad in scope or content | Synonyms: across-the-board, all-embracing, all-encompassing, all-inclusive, broad, encompassing, extensive, panoptic, wide |
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| (noun) bedding that keeps a person warm in bed | Synonyms: cover |
| (noun) a layer of lead surrounding the highly reactive core of a nuclear reactor | - |
| (noun) anything that covers | Synonyms: mantle |
| (verb) cover as if with a blanket | - |
| (verb) form a blanket-like cover (over) | - |
| blanketed | (adjective) covered with (or as if with) a blanket | - |
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| blankly | (adverb) in a blank and uncomprehending manner | - |
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| blankness | (noun) the state of being blank; void; emptiness | - |
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| blanquillo | (noun) important marine food fishes | Synonyms: tilefish |
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| blare | (noun) a loud harsh or strident noise | Synonyms: blaring, cacophony, clamor, din |
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| (verb) make a strident noise | Synonyms: beep, claxon, honk, toot |
| (verb) make a strident sound | Synonyms: blast |
| blaring | (adjective) unpleasantly loud and penetrating | Synonyms: blasting |
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| (noun) a loud harsh or strident noise | Synonyms: blare, cacophony, clamor, din |
| blarney | (noun) flattery designed to gain favor | Synonyms: coaxing, soft soap, sweet talk |
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| (verb) influence or urge by gentle urging, caressing, or flattering | Synonyms: cajole, coax, inveigle, palaver, sweet-talk, wheedle |
| blase | (adjective) very sophisticated especially because of surfeit; versed in the ways of the world | Synonyms: worldly |
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| (adjective) nonchalantly unconcerned | - |
| (adjective) uninterested because of frequent exposure or indulgence | Synonyms: bored |
| blaspheme | (verb) utter obscenities or profanities | Synonyms: curse, cuss, imprecate, swear |
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| (verb) speak of in an irreverent or impious manner | - |
| blasphemer | (noun) a person who speaks disrespectfully of sacred things | - |
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| blasphemous | (adjective) characterized by profanity or cursing | Synonyms: blue, profane |
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| (adjective) grossly irreverent toward what is held to be sacred | Synonyms: profane, sacrilegious |
| blasphemously | (adverb) in a blasphemous manner | - |
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| blasphemy | (noun) blasphemous behavior; the act of depriving something of its sacred character | Synonyms: desecration, profanation, sacrilege |
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| (noun) blasphemous language (expressing disrespect for God or for something sacred) | - |
| blast | (noun) a very long fly ball | - |
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| (noun) intense adverse criticism | Synonyms: attack, fire, flack, flak |
| (noun) an explosion (as of dynamite) | - |
| (noun) a sudden very loud noise | Synonyms: bam, bang, clap, eruption |
| (noun) a highly pleasurable or exciting experience | Synonyms: good time |
| (noun) a strong current of air | Synonyms: blow, gust |
| (verb) shatter as if by explosion | Synonyms: knock down |
| (verb) shrivel or wither or mature imperfectly | - |
| (verb) criticize harshly or violently | Synonyms: crucify, pillory, savage |
| (verb) use explosives on | Synonyms: shell |
| (verb) fire a shot; release | Synonyms: shoot |
| (verb) hit with great force | Synonyms: boom, nail, smash |
| (verb) create by using explosives | Synonyms: shell |
| (verb) make with or as if with an explosion | - |
| (verb) apply a draft or strong wind to to | - |
| (verb) make a strident sound | Synonyms: blare |
| blasted | (adjective) expletives used informally as intensifiers | Synonyms: blame, blamed, blessed, damn, damned, darned, deuced, goddam, goddamn, goddamned, infernal |
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| blastema | (noun) a mass of undifferentiated cells from which an organ or body part develops | - |
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