Baconian – Of or pertaining to Lord Bacon or his system of philosophy.
bacterium – A microbe.
badger – To pester.
baffle – To foil or frustrate.
bailiff – An officer of court having custody of prisoners under arraignment.
baize – A single-colored napped woolen fabric used for table-covers, curtains, etc.
bale – A large package prepared for transportation or storage.
baleful – Malignant.
ballad – Any popular narrative poem, often with epic subject and usually in lyric form.
balsam – A medical preparation, aromatic and oily, used for healing.
banal – Commonplace.
barcarole – A boat-song of Venetian gondoliers.
barograph – An instrument that registers graphically and continuously the atmospheric pressure.
barometer – An instrument for indicating the atmospheric pressure per unit of surface.
barring prep. Apart from.
baritone – Having a register higher than bass and lower than tenor.
bask – To make warm by genial heat.
bass – Low in tone or compass.
baste – To cover with melted fat, gravy, while cooking.
baton – An official staff borne either as a weapon or as an emblem of authority or privilege.
battalion – A body of infantry composed of two or more companies, forming a part of a regiment.
batten – A narrow strip of wood.
batter – A thick liquid mixture of two or more materials beaten together, to be used in cookery.
bauble – A trinket.
bawl – To proclaim by outcry.
beatify – To make supremely happy.
beatitude – Any state of great happiness.
beau – An escort or lover.
becalm – To make quiet.
beck – To give a signal to, by nod or gesture.
bedaub – To smear over, as with something oily or sticky.
bedeck – To cover with ornament.
bedlam – Madhouse.
befog – To confuse.
befriend – To be a friend to, especially when in need.
beget – To produce by sexual generation.
begrudge – To envy one of the possession of.
belate – To delay past the proper hour.
belay – To make fast, as a rope, by winding round a cleat.
belie – To misrepresent.
believe – To accept as true on the testimony or authority of others.
belittle – To disparage.
belle – A woman who is a center of attraction because of her beauty, accomplishments, etc.
bellicose – Warlike.
belligerent – Manifesting a warlike spirit.
bemoan – To lament
benediction – a solemn invocation of the divine blessing.
benefactor – A doer of kindly and charitable acts.
benefice – A church office endowed with funds or property for the maintenance of divine service.
beneficent – Characterized by charity and kindness.
beneficial – Helpful.
beneficiary – One who is lawfully entitled to the profits and proceeds of an estate or property.
benefit – Helpful result.
benevolence – Any act of kindness or well-doing.
benevolent – Loving others and actively desirous of their well-being.
benign – Good and kind of heart.
benignant – Benevolent in feeling, character, or aspect.
benignity – Kindness of feeling, disposition, or manner.
benison – Blessing.
bequeath – To give by will.
bereave – To make desolate with loneliness and grief.
berth – A bunk or bed in a vessel, sleeping-car, etc.
beseech – To implore.
beset – To attack on all sides.
besmear – To smear over, as with any oily or sticky substance.
bestial – Animal.
bestrew – To sprinkle or cover with things strewn.
bestride – To get or sit upon astride, as a horse.
bethink – To remind oneself.
betide – To happen to or befall.
betimes – In good season or time.
betroth – To engage to marry.
betrothal – Engagement to marry.
bevel – Any inclination of two surfaces other than 90 degrees.
bewilder – To confuse the perceptions or judgment of.
bibliomania – The passion for collecting books.
bibliography – A list of the words of an author, or the literature bearing on a particular subject.
bibliophile – One who loves books.
bibulous – Fond of drinking.
bide – To await.
biennial – A plant that produces leaves and roots the first year and flowers and fruit the second.
bier – A horizontal framework with two handles at each end for carrying a corpse to the grave.
bigamist – One who has two spouses at the same time.
bigamy – The crime of marrying any other person while having a legal spouse living.
bight – A slightly receding bay between headlands, formed by a long curve of a coast-line.
bilateral – Two-sided.
bilingual – Speaking two languages.
biograph – A bibliographical sketch or notice.
biography – A written account of one’s life, actions, and character.
biology – The science of life or living organisms.
biped – An animal having two feet.
birthright – A privilege or possession into which one is born.
bitterness – Acridity, as to the taste.
blasé – Sated with pleasure.
blaspheme – To indulge in profane oaths.
blatant – Noisily or offensively loud or clamorous.
blaze – A vivid glowing flame.
blazon – To make widely or generally known.
bleak – Desolate.
blemish – A mark that mars beauty.
blithe – Joyous.
blithesome – Cheerful.
blockade – The shutting up of a town, a frontier, or a line of coast by hostile forces.
boatswain – A subordinate officer of a vessel, who has general charge of the rigging, anchors, etc.
bodice – A women’s ornamental corset-shaped laced waist.
bodily – Corporeal.
boisterous – Unchecked merriment or animal spirits.
bole – The trunk or body of a tree.
bolero – A Spanish dance, illustrative of the passion of love, accompanied by caste nets and singing.
boll – A round pod or seed-capsule, as a flax or cotton.
bolster – To support, as something wrong.
bomb – A hollow projectile containing an explosive material.
bombard – To assail with any missile or with abusive speech.
bombardier – A person who has charge of mortars, bombs, and shells.
bombast – Inflated or extravagant language, especially on unimportant subjects.
boorish – Rude.
bore – To weary by tediousness or dullness.
borough – An incorporated village or town.
bosom – The breast or the upper front of the thorax of a human being, especially of a woman.
botanical – Connected with the study or cultivation of plants.
botanize – To study plant-life.
botany – The science that treats of plants.
bountiful – Showing abundance.
Bowdlerize – To expurgate in editing (a literary composition) by omitting words or passages.
bowler – In cricket, the player who delivers the ball.
boycott – To place the products or merchandise of under a ban.
brae – Hillside.
braggart – A vain boaster.
brandish – To wave, shake, or flourish triumphantly or defiantly, as a sword or spear.
bravado – An aggressive display of boldness.
bravo interj. Well done.
bray – A loud harsh sound, as the cry of an ass or the blast of a horn.
braze – To make of or ornament with brass.
brazier – An open pan or basin for holding live coals.
breach – The violation of official duty, lawful right, or a legal obligation.
breaker – One who trains horses, dogs, etc.
breech – The buttocks.
brethren – pl. Members of a brotherhood, gild, profession, association, or the like.
brevity – Shortness of duration.
bric-a-brac – Objects of curiosity or for decoration.
bridle – The head-harness of a horse consisting of a head-stall, a bit, and the reins.
brigade – A body of troops consisting of two or more regiments.
brigadier – General officer who commands a brigade, ranking between a colonel and a major-general.
brigand – One who lives by robbery and plunder.
brimstone – Sulfur.
brine – Water saturated with salt.
bristle – One of the coarse, stiff hairs of swine: used in brush-making, etc.
Britannia – The United Kingdom of Great Britain.
Briticism – A word, idiom, or phrase characteristic of Great Britain or the British.
brittle – Fragile.
broach – To mention, for the first time.
broadcast – Disseminated far and wide.
brogan – A coarse, heavy shoe.
brogue – Any dialectic pronunciation of English, especially that of the Irish people.
brokerage – The business of making sales and purchases for a commission; a broker.
bromine – A dark reddish-brown, non-metallic liquid element with a suffocating odor.
bronchitis – Inflammation of the bronchial tubes.
bronchus – Either of the two subdivisions of the trachea conveying air into the lungs.
brooch – An article of jewelry fastened by a hinged pin and hook on the underside.
brotherhood – Spiritual or social fellowship or solidarity.
browbeat – To overwhelm, or attempt to do so, by stern, haughty, or rude address or manner.
brusque – Somewhat rough or rude in manner or speech.
buffoon – A clown.
buffoonery – Low drollery, coarse jokes, etc.
bulbous – Of, or pertaining to, or like a bulb.
bullock – An ox.
bulrush – Any one of various tall rush-like plants growing in damp ground or water.
bulwark – Anything that gives security or defense.
bumper – A cup or glass filled to the brim, especially one to be drunk as a toast or health.
bumptious – Full of offensive and aggressive self-conceit.
bungle – To execute clumsily.
buoyancy – Power or tendency to float on or in a liquid or gas.
buoyant – Having the power or tendency to float or keep afloat.
bureau – A chest of drawers for clothing, etc.
bureaucracy – Government by departments of men transacting particular branches of public business.
burgess – In colonial times, a member of the lower house of the legislature of Maryland or Virginia.
burgher – An inhabitant, citizen or freeman of a borough burgh, or corporate town.
burnish – To make brilliant or shining.
bursar – A treasurer.
bustle – To hurry.
butt – To strike with or as with the head, or horns.
butte – A conspicuous hill, low mountain, or natural turret, generally isolated.
buttress – Any support or prop.
by-law – A rule or law adopted by an association, a corporation, or the like.