10-letter words starting with B
Embark on a linguistic journey with words that begin with the letter B. This section showcases how B at the start shapes the identity and sound of various words. From commonly used terms to rare finds, explore the diverse range of words that start with B, enriching your vocabulary and appreciation for language.
| Word | Points | Definition | Sentence example |
|---|---|---|---|
| background | 20 | understate the importance or quality of | - |
| basketball | 18 | a game played on a court by two opposing teams of 5 players; points are scored by throwing the ball through an elevated horizontal hoop | - |
| biological | 15 | (of a parent or child) related by blood; genetically related | biological child |
| babysitter | 17 | a person engaged to care for children when the parents are not home | - |
| belongings | 14 | something owned; any tangible or intangible possession that is owned by someone | - |
| bankruptcy | 23 | inability to discharge all your debts as they come due | the company had to declare bankruptcy |
| beforehand | 19 | being ahead of time or need | was beforehand with her report |
| binoculars | 14 | (plural) an optical instrument designed for simultaneous use by both eyes | - |
| blacksmith | 23 | a smith who forges and shapes iron with a hammer and anvil | - |
| bridegroom | 16 | a man who has recently been married | - |
| believable | 17 | capable of being believed | - |
| breathless | 15 | not breathing or able to breathe except with difficulty | breathless at thought of what I had done |
| bitterness | 12 | the taste experience when quinine or coffee is taken into the mouth | - |
| blackboard | 21 | sheet of slate; for writing with chalk | - |
| bargaining | 14 | the negotiation of the terms of a transaction or agreement | - |
| beneficial | 17 | promoting or enhancing well-being | an arms limitation agreement beneficial to all countries |
| ballistics | 14 | the trajectory of an object in free flight | - |
| benefactor | 17 | a person who helps people or institutions (especially with financial help) | - |
| barbershop | 19 | a shop where men can get their hair cut | - |
| behavioral | 18 | of or relating to behavior | behavioral sciences |
| benevolent | 15 | generous in assistance to the poor | a benevolent contributor |
| birthplace | 19 | where something originated or was nurtured in its early existence | the birthplace of civilization |
| borderline | 13 | of questionable or minimal quality | borderline grades |
| brilliance | 14 | unusual mental ability | - |
| blossoming | 15 | the time and process of budding and unfolding of blossoms | - |
| bridesmaid | 16 | an unmarried woman who attends the bride at a wedding | - |
| brightness | 16 | the quality of being luminous; emitting or reflecting light | - |
| blackberry | 23 | bramble with sweet edible black or dark purple berries that usually do not separate from the receptacle | - |
| backgammon | 23 | a board game for two players; pieces move according to throws of the dice | - |
| battleship | 17 | large and heavily armoured warship | - |
| buttermilk | 18 | residue from making butter from sour raw milk; or pasteurized milk curdled by adding a culture | - |
| bewildered | 17 | perplexed by many conflicting situations or statements; filled with bewilderment | bewildered and confused |
| bottomless | 14 | extremely deep | a bottomless pit |
| bestseller | 12 | a book that has had a large and rapid sale | - |
| bureaucrat | 14 | an official of a bureaucracy | - |
| beautician | 14 | someone who works in a beauty parlor | - |
| bewitching | 21 | capturing interest as if by a spell | bewitching smile |
| bothersome | 17 | causing irritation or annoyance | aircraft noise is particularly bothersome near the airport |
| bolsheviks | 22 | - | - |
| broomstick | 20 | the handle of a broom | - |
| barricaded | 16 | preventing entry or exit or a course of action | a barricaded street |
| bricklayer | 21 | a craftsman skilled in building with bricks | - |
| bookkeeper | 22 | someone who records the transactions of a business | - |
| bestiality | 15 | sexual activity between a person and an animal | - |
| bronchitis | 17 | inflammation of the membranes lining the bronchial tubes | - |
| brainstorm | 14 | the clear (and often sudden) understanding of a complex situation | - |
| bloodhound | 17 | a breed of large powerful hound of European origin having very acute smell and used in tracking | - |
| breastfeed | 16 | give suck to | - |
| birthright | 19 | an inheritance coming by right of birth (especially by primogeniture) | - |
| blistering | 13 | the formation of vesicles in or beneath the skin | - |
| banishment | 17 | rejection by means of an act of banishing or proscribing someone | - |
| blasphemer | 19 | a person who speaks disrespectfully of sacred things | - |
| backstreet | 18 | - | - |
| ballplayer | 17 | an athlete who plays baseball | - |
| betterment | 14 | a change for the better; progress in development | - |
| bombardier | 17 | a noncommissioned officer in the British artillery | - |
| bottleneck | 18 | a narrowing that reduces the flow through a channel | - |
| butchering | 18 | the business of a butcher | - |
| blackguard | 20 | subject to laughter or ridicule | - |
| blitzkrieg | 26 | a swift and violent military offensive with intensive aerial bombardment | - |
| butterball | 14 | small North American diving duck; males have bushy head plumage | - |
| blithering | 16 | - | - |
| barbecuing | 17 | roasting a large piece of meat on a revolving spit out of doors over an open fire | - |
| blissfully | 18 | in a blissful manner | he was blissfully unaware of the danger |
| bookseller | 16 | the proprietor of a bookstore | - |
| boisterous | 12 | violently agitated and turbulent | boisterous winds and waves |
| backfiring | 22 | - | - |
| biographer | 18 | someone who writes an account of a person's life | - |
| breathable | 17 | - | - |
| backstroke | 22 | a swimming stroke that resembles the crawl except the swimmer lies on his or her back | - |
| belittling | 13 | a belittling comment | - |
| beachfront | 20 | a strip of land running along a beach | - |
| blockhouse | 21 | a stronghold that is reinforced for protection from enemy fire; with apertures for defensive fire | - |
| brutalized | 22 | - | - |
| bandleader | 14 | the leader of a dance band | - |
| blackwater | 21 | any of several human or animal diseases characterized by dark urine resulting from rapid breakdown of red blood cells | - |
| bootlicker | 18 | someone who humbles himself as a sign of respect; who behaves as if he had no self-respect | - |
| bloodstain | 13 | a discoloration caused by blood | - |
| ballooning | 13 | flying in a balloon | - |
| bellwether | 18 | sheep that leads the herd often wearing a bell | - |
| beaujolais | 19 | dry fruity light red wine drunk within a few months after it is made; from the Beaujolais district in southeastern France | - |
| bookmaking | 23 | - | - |
| biochemist | 19 | someone with special training in biochemistry | - |
| bottlenose | 12 | any of several dolphins with rounded forehead and well-developed beak; chiefly of northern Atlantic and Mediterranean | - |
| buffoonery | 21 | acting like a clown or buffoon | - |
| brontosaur | 12 | huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic | - |
| brainchild | 18 | a product of your creative thinking and work | after years of work his brainchild was a tangible reality |
| bullheaded | 17 | obstinate and stupid | - |
| barometric | 16 | relating to atmospheric pressure or indicated by a barometer | barometric pressure |
| backstairs | 18 | secret and sly or sordid | backstairs gossip |
| blasphemed | 20 | - | - |
| blindingly | 17 | - | - |
| bulldozing | 23 | - | - |
| burdensome | 15 | not easily borne; wearing | the burdensome task of preparing the income tax return |
| broadening | 14 | an increase in width | - |
| beneficent | 17 | generous in assistance to the poor | - |
| bedchamber | 22 | a room used primarily for sleeping | - |
| brainpower | 17 | mental ability | - |
| bolshevism | 20 | Soviet communism | - |
| buttonhook | 19 | a hook for pulling a button through a buttonhole | - |
| breakwater | 19 | a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away | - |
| backpacker | 26 | a hiker who wears a backpack | - |
| balderdash | 17 | trivial nonsense | - |
| biblically | 19 | - | - |
| bootlegger | 14 | someone who makes or sells illegal liquor | - |
| busybodies | 18 | - | - |
| brownstone | 15 | a reddish brown sandstone; used in buildings | - |
| bandmaster | 15 | the conductor of a band | - |
| baldheaded | 18 | - | - |
| benedictus | 15 | - | - |
| beautified | 16 | - | - |
| bourgeoise | 13 | - | - |
| blockading | 20 | blocking entrance to and exit from seaports and harbors | the blockading ships prevented delivery of munitions |
| buttonhole | 15 | detain in conversation by or as if by holding on to the outer garments of; as for political or economic favors | - |
| breadcrumb | 19 | crumb of bread; used especially for coating or thickening | - |
| bannisters | 12 | - | - |
| belladonna | 13 | perennial Eurasian herb with reddish bell-shaped flowers and shining black berries; extensively grown in United States; roots and leaves yield atropine | - |
| blackthorn | 21 | a thorny Eurasian bush with plumlike fruits | - |
| biomedical | 17 | relating to the activities and applications of science to clinical medicine | biomedical research laboratory |
| biometrics | 16 | a branch of biology that studies biological phenomena and observations by means of statistical analysis | - |
| borderland | 14 | district consisting of the area on either side of a border or boundary of a country or an area | - |
| borderless | 13 | - | - |
| bookbinder | 19 | a worker whose trade is binding books | - |
| boneheaded | 17 | (used informally) stupid | - |
| bonesetter | 12 | someone (not necessarily a licensed physician) who sets broken bones | - |
| broadsword | 17 | a sword with a broad blade and (usually) two cutting edges; used to cut rather than stab | - |
| barefooted | 16 | without shoes on | - |
| bitchiness | 17 | malevolence by virtue of being malicious or spiteful or nasty | - |
| bootlegged | 15 | - | - |
| bluebottle | 14 | an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers | - |
| bollocking | 19 | - | - |
| backbiting | 21 | - | - |
| backhanded | 23 | (of racket strokes) made across the body with back of hand facing direction of stroke | - |
| belowdecks | 22 | - | - |
| bellflower | 18 | any of various plants of the genus Campanula having blue or white bell-shaped flowers | - |
| bipartisan | 14 | supported by both sides | - |
| blanketing | 17 | - | - |
| bloodstone | 13 | green chalcedony with red spots that resemble blood | - |
| bushmaster | 17 | - | - |
| bridgehead | 18 | an area in hostile territory that has been captured and is held awaiting further troops and supplies | an attempt to secure a bridgehead behind enemy lines |
| bridgework | 21 | a denture anchored to teeth on either side of missing teeth | - |
| bemusement | 16 | confusion resulting from failure to understand | - |
| battlement | 14 | a rampart built around the top of a castle with regular gaps for firing arrows or guns | - |
| biannually | 15 | twice a year | we hold our big sale biannually |
| bilocation | 14 | the ability (said of certain Roman Catholic saints) to exist simultaneously in two locations | - |
| breadstick | 19 | a crisp stick-shaped roll; often served with soup | - |
| bravissimo | 17 | - | - |
| brahmanism | 19 | the religious beliefs of ancient India as prescribed in the sacred Vedas and Brahmanas and Upanishads | - |
| bolshevist | 18 | of or relating to Bolshevism | - |
| brutalised | 13 | - | - |
| budgerigar | 15 | small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors | - |
| buttonless | 12 | - | - |
| breastbone | 14 | the flat bone that articulates with the clavicles and the first seven pairs of ribs | - |
| bathhouses | 18 | - | - |
| barramundi | 15 | a species of large perch noted for its sporting and eating qualities; lives in marine, estuary, and freshwater habitats | - |
| barrelhead | 16 | - | - |
| barrelling | 13 | - | - |
| balustrade | 13 | a railing at the side of a staircase or balcony to prevent people from falling | - |
| beseeching | 18 | begging | - |
| beforetime | 17 | - | - |
| beekeeping | 19 | the cultivation of bees on a commercial scale for the production of honey | - |
| begrudging | 16 | - | - |
| bedclothes | 18 | coverings that are used on a bed | - |
| bedraggled | 16 | in deplorable condition | a street of bedraggled tenements |
| blackheart | 21 | heart cherry with dark flesh and skin cherry | - |
| blackening | 19 | changing to a darker color | - |
| blancmange | 17 | sweet almond-flavored milk pudding thickened with gelatin or cornstarch; usually molded | - |
| bighearted | 17 | given or giving freely | - |
| biophysics | 22 | physics as applied to biological problems | - |
| bioscience | 16 | any of the branches of natural science dealing with the structure and behavior of living organisms | - |
| bedwetting | 17 | - | - |
| boastfully | 18 | in a boastful manner | - |
| boneshaker | 19 | any wheeled vehicle that is dilapidated and uncomfortable | that old bike without rubber tires was a real boneshaker |
| burglarize | 22 | commit a burglary; enter and rob a dwelling | - |
| brigantine | 13 | two-masted sailing vessel square-rigged on the foremast and fore-and-aft rigged on the mainmast | - |
| brigandage | 15 | - | - |
| breakpoint | 18 | - | - |
| browbeaten | 17 | - | - |
| barehanded | 17 | with bare hands | fought barehanded |
| bareheaded | 17 | having the head uncovered | caught bareheaded by the downpour |
| barrenness | 12 | the quality of yielding nothing of value | - |
| backhander | 22 | a backhanded blow | - |
| backlogged | 21 | - | - |
| balloonist | 12 | someone who flies a balloon | - |
| bejewelled | 23 | - | - |
| beefburger | 18 | a sandwich consisting of a fried cake of minced beef served on a bun, often with other ingredients | - |
| bifurcated | 18 | divided into or made up of two parts | socially bifurcated populations |
| bigmouthed | 19 | unwisely talking too much | - |
| biodynamic | 20 | - | - |
| bronchites | 17 | - | - |
| blackshirt | 21 | a member of the Italian fascist party before World War II | - |
| butterhorn | 15 | - | - |
| butterhead | 16 | - | - |
| bushworker | 22 | - | - |
| bleatingly | 16 | - | - |
| bomboniere | 16 | - | - |
| bonytongue | 16 | - | - |
| botrytised | 16 | - | - |
| braceleted | 15 | - | - |
| breastless | 12 | without a breast | - |
| bucketload | 19 | - | - |
| bunyavirus | 18 | an animal virus belonging to the family Bunyaviridae; can be used as a bioweapon | - |
| biowarfare | 18 | - | - |
| bacchantic | 21 | of or relating to or resembling a bacchanalian reveler | - |
| backpaddle | 22 | - | - |
| backroomer | 20 | - | - |
| belsnickle | 18 | - | - |
| berdachism | 20 | - | - |
| bereftness | 15 | - | - |
| bijuralism | 21 | - | - |
| biocentric | 16 | - | - |
| biodefense | 16 | procedures involved in taking defensive measures against attacks using biological agents | - |
| biohacking | 22 | - | - |
| biomineral | 14 | - | - |
| beavertail | 15 | - | - |
| backstabby | 25 | - | - |
| baggataway | 20 | - | - |
| baitcaster | 14 | - | - |
| ballbuster | 14 | - | - |
| balsamroot | 14 | a plant of the genus Balsamorhiza having downy leaves in a basal rosette and yellow flowers and long balsam-scented taproots | - |
| barnburner | 14 | an impressively successful event | the rock concert was a real barnburner |
| beadworker | 20 | - | - |
| beautybush | 20 | - | - |
| bionically | 17 | - | - |
| breaksaway | 22 | - | - |
| brewhouses | 18 | - | - |
| breadknife | 20 | - | - |
| brainworks | 19 | - | - |
| brainfoods | 16 | - | - |
| bowlingual | 16 | - | - |
| bowhunting | 19 | - | - |
| boutiquier | 21 | - | - |
| bouncedown | 18 | - | - |
| boulderier | 13 | - | - |
| bottomings | 15 | - | - |
| boozehound | 25 | - | - |
| boomsticks | 20 | - | - |
| bookending | 18 | - | - |
| boogalooed | 14 | - | - |
| bologneses | 13 | - | - |
| boffiniest | 18 | - | - |
| bricoleurs | 14 | - | - |
| bridezilla | 22 | - | - |
| bridgelike | 18 | - | - |
| buzzkiller | 34 | - | - |
| buttoniest | 12 | - | - |
| bushelfuls | 18 | - | - |
| burrfishes | 18 | - | - |
| bupropions | 16 | - | - |
| bunburying | 18 | - | - |
| bulrushier | 15 | - | - |
| bullycides | 18 | - | - |
| bullockier | 18 | - | - |
| bulkheaded | 21 | - | - |
| bufferings | 19 | - | - |
| budtenders | 14 | - | - |
| budgetings | 15 | - | - |
| broccolini | 16 | - | - |
| bodywashes | 22 | - | - |
| backplates | 20 | - | - |
| backplanes | 20 | - | - |
| backliners | 18 | - | - |
| backacters | 20 | - | - |
| babyccinos | 21 | - | - |
| blockships | 23 | - | - |
| bodyshaper | 21 | - | - |
| birchwoods | 21 | - | - |
| birchbarks | 23 | - | - |
| bioprivacy | 22 | - | - |
| bioplastic | 16 | - | - |
| biohackers | 21 | - | - |
| biofuelled | 16 | - | - |
| bioethanol | 15 | - | - |
| biodiverse | 16 | - | - |
| biobanking | 19 | - | - |
| bimaternal | 14 | - | - |
| billetings | 13 | - | - |
| biggitiest | 14 | - | - |
| biggetiest | 14 | - | - |
| bierwursts | 15 | - | - |
| beseemlier | 14 | - | - |
| bergamasko | 19 | - | - |
| bemedaling | 16 | - | - |
| birdsfoots | 16 | - | - |
| birthdates | 16 | - | - |
| biscuitier | 14 | - | - |
| bodybuilds | 19 | - | - |
| bobblehead | 20 | - | - |
| bluemouths | 17 | - | - |
| blossomier | 14 | - | - |
| blokarting | 17 | - | - |
| blogstream | 15 | - | - |
| bloggerati | 14 | - | - |
| beansprout | 14 | - | - |
| blockchain | 23 | - | - |
| blizzarded | 32 | - | - |
| blimperies | 16 | - | - |
| bleomycins | 19 | - | - |
| blastholes | 15 | - | - |
| blamestorm | 16 | - | - |
| bladderier | 14 | - | - |
| blackspots | 20 | - | - |
| bisphenols | 17 | - | - |
| bellyflops | 20 | - | - |
| bellyboats | 17 | - | - |
| bellowings | 16 | - | - |
| bankerlier | 16 | - | - |
| banjoleles | 19 | - | - |
| bandurists | 13 | - | - |
| bandsawing | 17 | - | - |
| bandpasses | 15 | - | - |
| bandfishes | 19 | - | - |
| bandagings | 15 | - | - |
| balsamiest | 14 | - | - |
| ballotings | 13 | - | - |
| ballhawked | 23 | - | - |
| ballfields | 16 | - | - |
| balayaging | 17 | - | - |
| bajillions | 19 | - | - |
| badgerlier | 14 | - | - |
| backwinded | 23 | - | - |
| backstraps | 20 | - | - |
| backsplits | 20 | - | - |
| bariatrics | 14 | - | - |
| barnboards | 15 | - | - |
| barrasways | 18 | - | - |
| belgicisms | 17 | - | - |
| bejeezuses | 28 | - | - |
| bejaberses | 21 | - | - |
| beggarlier | 14 | - | - |
| beclamours | 16 | - | - |
| beatboxing | 22 | - | - |
| beatboxers | 21 | - | - |
| bearhugged | 18 | - | - |
| beakerfuls | 19 | - | - |
| beachwears | 20 | - | - |
| baynoddies | 17 | - | - |
| baulklines | 16 | - | - |
| baulkingly | 20 | - | - |
| battleaxes | 19 | - | - |
| batonniers | 12 | - | - |
| bashfuller | 18 | - | - |
| basaltines | 12 | - | - |
| backronyms | 23 | - | - |
| butylating | 16 | - | - |
| butylation | 15 | - | - |
| byproducts | 20 | - | - |
| byssaceous | 17 | - | - |
| byssinoses | 15 | - | - |
| byssinosis | 15 | - | - |
| bystanders | 16 | - | - |
| bytownites | 18 | - | - |
| botanizing | 22 | - | - |
| bottommost | 16 | farthest down | bottommost shelf |
| bottomness | 14 | - | - |
| bottomries | 14 | - | - |
| botulinums | 14 | - | - |
| bouillotte | 12 | - | - |
| boulderers | 13 | - | - |
| bouldering | 14 | - | - |
| boulevards | 16 | - | - |
| bottomland | 15 | low-lying alluvial land near a river | - |
| botcheries | 17 | - | - |
| botchiness | 17 | - | - |
| botryoidal | 16 | resembling a cluster of grapes in form | - |
| botrytises | 15 | - | - |
| bottlefuls | 15 | - | - |
| boullework | 19 | - | - |
| bounciness | 14 | the quality of a substance that is able to rebound | - |
| bouncingly | 18 | - | - |
| bowdlerise | 16 | edit by omitting or modifying parts considered indelicate | - |
| bowdlerism | 18 | censorship in the form of prudish expurgation | - |
| bowdlerize | 25 | edit by omitting or modifying parts considered indelicate | bowdlerize a novel |
| bowerbirds | 18 | - | - |
| bowerwoman | 20 | - | - |
| bowerwomen | 20 | - | - |
| bowhunters | 18 | - | - |
| bowstrings | 16 | - | - |
| bovinities | 15 | - | - |
| bouvardias | 16 | - | - |
| boundaries | 13 | - | - |
| bounderish | 16 | (of persons) lacking in refinement or grace | - |
| bountyheds | 19 | - | - |
| bourasques | 21 | - | - |
| bourbonism | 16 | - | - |
| bourgeoned | 14 | - | - |
| bousingken | 17 | - | - |
| boxberries | 21 | - | - |
| botanizers | 21 | - | - |
| bookmarked | 23 | - | - |
| boongaries | 13 | - | - |
| boosterish | 15 | - | - |
| boosterism | 14 | - | - |
| bootblacks | 20 | - | - |
| bootlessly | 15 | - | - |
| bootlicked | 19 | - | - |
| boondoggle | 15 | do useless, wasteful, or trivial work | - |
| boomslangs | 15 | - | - |
| bookmarker | 22 | a marker (a piece of paper or ribbon) placed between the pages of a book to mark the reader's place | - |
| bookmobile | 20 | a van with shelves of books; serves as a mobile library or bookstore | - |
| bookplates | 18 | - | - |
| bookstalls | 16 | - | - |
| bookstands | 17 | - | - |
| bookstores | 16 | - | - |
| boomerangs | 15 | - | - |
| bootloader | 13 | - | - |
| bootmakers | 18 | - | - |
| boringness | 13 | extreme dullness; lacking spirit or interest | - |
| borrowings | 16 | - | - |
| bosberaads | 15 | - | - |
| boschvarks | 24 | - | - |
| boschvelds | 21 | - | - |
| bossyboots | 17 | - | - |
| botanicals | 14 | - | - |
| botanisers | 12 | - | - |
| borghettos | 16 | - | - |
| borescopes | 16 | - | - |
| bootmaking | 19 | - | - |
| bootstraps | 14 | - | - |
| borborygmi | 20 | - | - |
| bordereaux | 20 | - | - |
| bordraging | 15 | - | - |
| botanising | 13 | - | - |
| brambliest | 16 | - | - |
| brandisher | 16 | - | - |
| brandishes | 16 | - | - |
| brandlings | 14 | - | - |
| brandreths | 16 | - | - |
| branglings | 14 | - | - |
| brannigans | 13 | - | - |
| brashiness | 15 | - | - |
| brasileins | 12 | - | - |
| brandished | 17 | - | - |
| brandering | 14 | - | - |
| bramblings | 17 | - | - |
| branchiate | 17 | provided with gills | - |
| branchiest | 17 | - | - |
| branchings | 18 | - | - |
| branchless | 17 | having no branches | - |
| branchlets | 17 | - | - |
| branchlike | 21 | - | - |
| branchline | 17 | - | - |
| brassbound | 15 | inflexibly entrenched and unchangeable | brassbound traditions |
| brasseries | 12 | - | - |
| brassieres | 12 | - | - |
| bravadoing | 17 | - | - |
| brawniness | 15 | possessing muscular strength | - |
| brazenness | 21 | behavior marked by a bold defiance of the proprieties and lack of shame | - |
| brazenries | 21 | - | - |
| brazieries | 21 | - | - |
| brazileins | 21 | - | - |
| brazilwood | 25 | tropical tree with prickly trunk; its heavy red wood yields a red dye and is used for cabinetry | - |
| braunching | 18 | - | - |
| bratwursts | 15 | - | - |
| brassiness | 12 | - | - |
| brasswares | 15 | - | - |
| bratpacker | 20 | - | - |
| bratticing | 15 | - | - |
| brattiness | 12 | - | - |
| brattished | 16 | - | - |
| brattishes | 15 | - | - |
| brattlings | 13 | - | - |
| breadberry | 18 | - | - |
| brainwaves | 18 | - | - |
| boxercises | 21 | - | - |
| brachiates | 17 | - | - |
| brachiator | 17 | - | - |
| brachiopod | 20 | of or belonging to the phylum Brachiopoda | - |
| brachyaxes | 27 | - | - |
| brachyaxis | 27 | - | - |
| brachydome | 23 | - | - |
| brachylogy | 24 | - | - |
| brachyural | 20 | - | - |
| brachiated | 18 | - | - |
| braaivleis | 15 | - | - |
| boxhauling | 23 | - | - |
| boxinesses | 19 | - | - |
| boxkeepers | 25 | - | - |
| boxwallahs | 25 | - | - |
| boycotters | 17 | - | - |
| boycotting | 18 | - | - |
| boyfriends | 19 | - | - |
| boyishness | 18 | being characteristic of a boy | - |
| brachyuran | 20 | typical crabs | - |
| bracketing | 19 | - | - |
| bracteates | 14 | - | - |
| braillists | 12 | - | - |
| brainboxes | 21 | - | - |
| braincases | 14 | - | - |
| brainfarts | 15 | - | - |
| braininess | 12 | - | - |
| brainstems | 14 | - | - |
| brahminist | 17 | - | - |
| brahminism | 19 | the religious beliefs of ancient India as prescribed in the sacred Vedas and Brahmanas and Upanishads | - |
| bracteoles | 14 | - | - |
| bradykinin | 20 | - | - |
| bradyseism | 18 | - | - |
| bragadisme | 16 | - | - |
| braggartly | 17 | - | - |
| braggingly | 18 | - | - |
