| authoritative | (adjective) endowed with authority | Synonyms: authorised, authorized |
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| (adjective) having authority or ascendancy or influence | Synonyms: important |
| (adjective) of recognized authority or excellence | Synonyms: definitive |
| authoritatively | (adverb) in an authoritative and magisterial manner | Synonyms: magisterially |
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| authorities | (noun) the organization that is the governing authority of a political unit | Synonyms: government, regime |
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| authority | (noun) the power or right to give orders or make decisions | Synonyms: authorisation, authorization, dominance, potency, say-so |
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| (noun) official permission or approval | Synonyms: authorisation, authorization, sanction |
| (noun) freedom from doubt; belief in yourself and your abilities | Synonyms: assurance, confidence, self-assurance, self-confidence, sureness |
| (noun) an authoritative written work | - |
| (noun) an administrative unit of government | Synonyms: agency, bureau, federal agency, government agency, office |
| (noun) an expert whose views are taken as definitive | - |
| (noun) (usually plural) persons who exercise (administrative) control over others | - |
| autoimmunity | (noun) production of antibodies against the tissues of your own body; produces autoimmune disease or hypersensitivity reactions | - |
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| availability | (noun) the quality of being at hand when needed | Synonyms: accessibility, availableness, handiness |
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| avaritia | (noun) reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins) | Synonyms: avarice, covetousness, greed, rapacity |
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| avidity | (noun) a positive feeling of wanting to push ahead with something | Synonyms: avidness, eagerness, keenness |
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| avitaminosis | (noun) any of several diseases caused by deficiency of one or more vitamins | Synonyms: hypovitaminosis |
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| avitaminotic | (adjective) of or relating to or characteristic of avitaminosis | - |
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| await | (verb) look forward to the probable occurrence of | Synonyms: expect, look, wait |
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| awaited | (adjective) expected hopefully | Synonyms: anticipated, hoped-for |
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| azithromycin | (noun) a systemic antibacterial medicine (trade name Zithromax) that is prescribed to treat bacterial infections in many different parts of the body | Synonyms: Zithromax |
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| azurite | (noun) blue carbonate of copper; blue malachite | - |
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| babbitt | (noun) an alloy of tin with some copper and antimony; a lining for bearings that reduces friction | Synonyms: Babbitt metal |
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| (verb) line with a Babbitt metal | - |
| babbitting | (noun) lining a surface or bearing with Babbitt metal | - |
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| babysit | (verb) work or act as a baby-sitter | Synonyms: baby-sit, sit |
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| (verb) take watchful responsibility for | Synonyms: baby-sit |
| babysitter | (noun) a person engaged to care for children when the parents are not home | Synonyms: baby-sitter, sitter |
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| babysitting | (noun) the work of a baby sitter; caring for children when their parents are not home | Synonyms: baby sitting |
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| bacitracin | (noun) a polypeptide antibiotic of known chemical structure effective against several types of Gram-positive organisms; usually applied locally | - |
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| backbite | (verb) say mean things | Synonyms: bitch |
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| backbiter | (noun) one who attacks the reputation of another by slander or libel | Synonyms: defamer, libeler, maligner, slanderer, traducer, vilifier |
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| backstitch | (noun) an overlapping stitch made by starting the next stitch at the middle of the preceding one | - |
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| (verb) do backstitches | - |
| baddeleyite | (noun) a mineral consisting of zirconium oxide | - |
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| bait | (noun) something used to lure fish or other animals into danger so they can be trapped or killed | Synonyms: decoy, lure |
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| (noun) anything that serves as an enticement | Synonyms: come-on, hook, lure, sweetener |
| (verb) harass with persistent criticism or carping | Synonyms: cod, rag, rally, razz, ride, tantalise, tantalize, taunt, tease, twit |
| (verb) attack with dogs or set dogs upon | - |
| (verb) lure, entice, or entrap with bait | - |
| baiting | (noun) harassment especially of a tethered animal | - |
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| balanitis | (noun) inflammation of the head of the penis | - |
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| balanoposthitis | (noun) inflammation of both the head of the penis and the foreskin | - |
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| banality | (noun) a trite or obvious remark | Synonyms: bromide, cliche, commonplace, platitude |
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| bandit | (noun) an armed thief who is (usually) a member of a band | Synonyms: brigand |
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| banditry | (noun) the practice of plundering in gangs | - |
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| barbarity | (noun) a brutal barbarous savage act | Synonyms: barbarism, brutality, savagery |
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| (noun) the quality of being shockingly cruel and inhumane | Synonyms: atrociousness, atrocity, barbarousness, heinousness |
| barbital | (noun) a barbiturate used as a hypnotic | Synonyms: barbitone, diethylbarbituric acid, diethylmalonylurea, veronal |
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| barbitone | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, diethylbarbituric acid, diethylmalonylurea, veronal |
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| barbiturate | (noun) organic compound having powerful soporific effect; overdose can be fatal | - |
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| barite | (noun) a white or colorless mineral (BaSO4); the main source of barium | Synonyms: barium sulphate, barytes, heavy spar |
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| baritone | (adjective) lower in range than tenor and higher than bass | - |
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| (noun) the second lowest brass wind instrument | Synonyms: baritone horn |
| (noun) the second lowest adult male singing voice | Synonyms: baritone voice |
| (noun) a male singer | Synonyms: barytone |
| bastnaesite | (noun) a yellow-to-brown mineral that is a source of rare earth elements | Synonyms: bastnasite |
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| bastnasite | (noun) a yellow-to-brown mineral that is a source of rare earth elements | Synonyms: bastnaesite |
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| batholite | (noun) large mass of intrusive igneous rock believed to have solidified deep within the earth | Synonyms: batholith, pluton, plutonic rock |
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| batholith | (noun) large mass of intrusive igneous rock believed to have solidified deep within the earth | Synonyms: batholite, pluton, plutonic rock |
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| batholithic | (adjective) of or relating to a batholith | Synonyms: batholitic |
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| batholitic | (adjective) of or relating to a batholith | Synonyms: batholithic |
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| bauxite | (noun) a clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum hydroxides; used as an abrasive and catalyst | - |
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| bauxitic | (adjective) resembling or containing bauxite | - |
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| beatitude | (noun) a state of supreme happiness | Synonyms: beatification, blessedness |
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| bedlamite | (noun) an archaic term for a lunatic | - |
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| bedsit | (noun) a furnished sitting room with sleeping accommodations (and some plumbing) | Synonyms: bedsitter, bedsitting room |
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| bedsitter | (noun) a furnished sitting room with sleeping accommodations (and some plumbing) | Synonyms: bedsit, bedsitting room |
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| befit | (verb) accord or comport with | Synonyms: beseem, suit |
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| befitting | (adjective) appropriate to | - |
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| befittingly | (adverb) in accordance with what is appropriate or suitable for the circumstances | Synonyms: appropriately, duly, fitly, fittingly, properly, suitably |
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| belemnite | (noun) a conical calcareous fossil tapering to a point at one end and with a conical cavity at the other end containing (when unbroken) a small chambered phragmocone from the shell of any of numerous extinct cephalopods of the family Belemnitidae | - |
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| belemnitic | (adjective) of or relating to belemnites | - |
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| believability | (noun) the quality of being believable or trustworthy | Synonyms: credibility, credibleness |
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| belittle | (verb) lessen the authority, dignity, or reputation of | Synonyms: diminish |
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| (verb) express a negative opinion of | Synonyms: disparage, pick at |
| (verb) cause to seem less serious; play down | Synonyms: denigrate, derogate, minimize |
| belittled | (adjective) made to seem smaller or less (especially in worth) | Synonyms: diminished, small |
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| belittlement | (noun) the act of making a person or a thing seem little or unimportant. | - |
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| belittling | (adjective) tending to diminish or disparage | Synonyms: deprecating, deprecative, deprecatory, depreciative, depreciatory, slighting |
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| (noun) the act of belittling | - |
| (noun) a belittling comment | Synonyms: denigration |
| bellicosity | (noun) a natural disposition to fight | Synonyms: bellicoseness |
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| bendability | (noun) the property of being easily bent without breaking | Synonyms: pliability |
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| benefit | (noun) something that aids or promotes well-being | Synonyms: welfare |
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| (noun) a performance to raise money for a charitable cause | - |
| (noun) financial assistance in time of need | - |
| (verb) derive a benefit from | Synonyms: gain, profit |
| (verb) be beneficial for | Synonyms: do good |
| benignity | (noun) a kind act | Synonyms: kindness |
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| (noun) the quality of being kind and gentle | Synonyms: benignancy, graciousness |
| bentonite | (noun) an absorbent aluminum silicate clay formed from volcanic ash | - |
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| bentonitic | (adjective) of or relating to or containing bentonite | - |
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| bestiality | (noun) sexual activity between a person and an animal | Synonyms: sodomy, zooerastia, zooerasty |
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| (noun) the stupid brutal quality of a beast | - |
| bewitch | (verb) attract strongly, as if with a magnet | Synonyms: magnetise, magnetize, mesmerise, mesmerize, spellbind |
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| (verb) cast a spell over someone or something; put a hex on someone or something | Synonyms: enchant, glamour, hex, jinx, witch |
| (verb) attract; cause to be enamored | Synonyms: becharm, beguile, captivate, capture, catch, charm, enamor, enamour, enchant, entrance, fascinate, trance |
| bewitched | (adjective) captured, as if under a spell | Synonyms: ensorcelled |
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| bewitchery | (noun) magnetic personal charm | Synonyms: animal magnetism, beguilement |
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| bewitching | (adjective) capturing interest as if by a spell | Synonyms: captivating, enchanting, enthralling, entrancing, fascinating |
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| bewitchingly | (adverb) in a bewitching manner | Synonyms: captivatingly, enchantingly, enthrallingly |
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| bewitchment | (noun) a magical spell | Synonyms: enchantment |
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| bicipital | (adjective) having two heads or points of origin as a biceps | - |
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| bilaterality | (noun) the property of being symmetrical about a vertical plane | Synonyms: bilateral symmetry, bilateralism |
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| biodiversity | (noun) the diversity of plant and animal life in a particular habitat (or in the world as a whole) | - |
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| bioelectricity | (noun) electric phenomena in animals or plants | - |
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| biotite | (noun) dark brown to black mica found in igneous and metamorphic rock | - |
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| biotitic | (adjective) relating to or involving biotite | - |
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| bipartite | (adjective) divided into two portions almost to the base | - |
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| (adjective) involving two parts or elements | Synonyms: two-part, two-way |
| biscuit | (noun) small round bread leavened with baking-powder or soda | - |
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| (noun) any of various small flat sweet cakes | Synonyms: cookie, cooky |
| bisexuality | (noun) sexual activity with both men and women | - |
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| (noun) showing characteristics of both sexes | Synonyms: androgyny, hermaphroditism |
| bit | (noun) the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press | - |
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| (noun) piece of metal held in horse's mouth by reins and used to control the horse while riding | - |
| (noun) the part of a key that enters a lock and lifts the tumblers | - |
| (noun) a short performance that is part of a longer program | Synonyms: act, number, routine, turn |
| (noun) a small fragment | Synonyms: snatch |
| (noun) an instance of some kind | Synonyms: piece |
| (noun) a small amount of solid food; a mouthful | Synonyms: bite, morsel |
| (noun) a small fragment of something broken off from the whole | Synonyms: chip, flake, fleck, scrap |
| (noun) a unit of measurement of information (from binary + digit); the amount of information in a system having two equiprobable states | - |
| (noun) a small piece or quantity of something | Synonyms: spot |
| (noun) an indefinitely short time | Synonyms: minute, mo, moment, second |
| bitartrate | (noun) an acid tartrate; a hydrogen tartrate | - |
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| bitch | (noun) female of any member of the dog family | - |
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| (noun) informal terms for objecting | Synonyms: beef, gripe, kick, squawk |
| (noun) a person (usually but not necessarily a woman) who is thoroughly disliked | Synonyms: cunt |
| (noun) an unpleasant difficulty | - |
| (verb) say mean things | Synonyms: backbite |
| (verb) complain | Synonyms: beef, bellyache, crab, gripe, grouse, holler, squawk |
| bitchery | (noun) aggressive remarks and behavior like that of a spiteful malicious woman | - |
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| bitchiness | (noun) malevolence by virtue of being malicious or spiteful or nasty | Synonyms: cattiness, nastiness, spite, spitefulness |
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| bitchy | (adjective) marked by or arising from malice | Synonyms: cattish, catty |
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| bite | (noun) the act of gripping or chewing off with the teeth and jaws | Synonyms: chomp |
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| (noun) a portion removed from the whole | - |
| (noun) a strong odor or taste property | Synonyms: pungency, raciness, sharpness |
| (noun) wit having a sharp and caustic quality | Synonyms: pungency |
| (noun) (angling) an instance of a fish taking the bait | - |
| (noun) a light informal meal | Synonyms: collation, snack |
| (noun) a small amount of solid food; a mouthful | Synonyms: bit, morsel |
| (noun) a wound resulting from biting by an animal or a person | - |
| (noun) a painful wound caused by the thrust of an insect's stinger into skin | Synonyms: insect bite, sting |
| (verb) to grip, cut off, or tear with or as if with the teeth or jaws | Synonyms: seize with teeth |
| (verb) penetrate or cut, as with a knife | - |
| (verb) deliver a sting to | Synonyms: prick, sting |
| (verb) cause a sharp or stinging pain or discomfort | Synonyms: burn, sting |
| biteplate | (noun) a removable dental appliance that is worn in the palate for diagnostic or therapeutic purposes | Synonyms: bite plate |
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| biter | (noun) someone who bites | - |
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| bitewing | (noun) a dental X-ray film that can be held in place by the teeth during radiography | - |
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| bitey | (adjective) Having a tendency to bite aggressively | - |
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| biting | (adjective) causing a sharply painful or stinging sensation; used especially of cold | Synonyms: bitter |
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| (adjective) capable of wounding | Synonyms: barbed, mordacious, nipping, pungent |
| bitingly | (adverb) extremely and sharply | Synonyms: bitter, bitterly, piercingly |
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| bitmap | (noun) an image represented as a two dimensional array of brightness values for pixels | Synonyms: electronic image |
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| bitok | (noun) a Russian dish made with patties of ground meat (mixed with onions and bread and milk) and served with a sauce of sour cream | - |
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| bitstock | (noun) a carpenter's tool having a crank handle for turning and a socket to hold a bit for boring | Synonyms: brace |
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| bitt | (noun) a strong post (as on a wharf or quay or ship for attaching mooring lines) | Synonyms: bollard |
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| (verb) secure with a bitt | - |
| bitter | (adjective) proceeding from or exhibiting great hostility or animosity | - |
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| (adjective) very difficult to accept or bear | - |
| (adjective) causing a sharply painful or stinging sensation; used especially of cold | Synonyms: biting |
| (adjective) marked by strong resentment or cynicism | Synonyms: acrimonious |
| (adjective) expressive of severe grief or regret | - |
| (adjective) causing a sharp and acrid taste experience | - |
| (adjective) harsh or corrosive in tone | Synonyms: acerb, acerbic, acid, acrid, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic |
| (noun) the property of having a harsh unpleasant taste | Synonyms: bitterness |
| (noun) the taste experience when quinine or coffee is taken into the mouth | Synonyms: bitterness |
| (noun) English term for a dry sharp-tasting ale with strong flavor of hops (usually on draft) | - |
| (adverb) extremely and sharply | Synonyms: bitingly, bitterly, piercingly |
| (verb) make bitter | - |
| bittercress | (noun) any of various herbs of the genus Cardamine, having usually pinnate leaves and racemes of white, pink or purple flowers; cosmopolitan except Antarctic | Synonyms: bitter cress |
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