| abattis | (noun) a line of defense consisting of a barrier of felled or live trees with branches (sharpened or with barbed wire entwined) pointed toward the enemy | Synonyms: abatis |
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| abattoir | (noun) a building where animals are butchered | Synonyms: butchery, shambles, slaughterhouse |
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| abwatt | (noun) a power unit equal to the power dissipated when 1 abampere flows across a potential difference of 1 abvolt (one ten-thousandth of a milliwatt) | - |
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| antimatter | (noun) matter consisting of elementary particles that are the antiparticles of those making up normal substances | - |
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| attach | (verb) become attached | - |
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| (verb) cause to be attached | - |
| (verb) be attached; be in contact with | - |
| (verb) take temporary possession of as a security, by legal authority | Synonyms: confiscate, impound, seize, sequester |
| (verb) create social or emotional ties | Synonyms: bind, bond, tie |
| attachable | (adjective) capable of being fastened or added to something else | - |
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| attache | (noun) a shallow and rectangular briefcase | Synonyms: attache case |
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| (noun) a specialist assigned to the staff of a diplomatic mission | - |
| attached | (adjective) associated in an exclusive sexual relationship | Synonyms: committed |
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| (adjective) used of buildings joined by common sidewalls | - |
| (adjective) fond and affectionate | - |
| (adjective) being joined in close association | Synonyms: affiliated, connected |
| attachment | (noun) the act of fastening things together | Synonyms: fastening |
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| (noun) the act of attaching or affixing something | Synonyms: affixation |
| (noun) faithful support for a cause or political party or religion | Synonyms: adherence, adhesion |
| (noun) a supplementary part or accessory | - |
| (noun) a connection that fastens things together | Synonyms: bond |
| (noun) a writ authorizing the seizure of property that may be needed for the payment of a judgment in a judicial proceeding | - |
| (noun) a feeling of affection for a person or an institution | Synonyms: fond regard |
| attack | (noun) (military) an offensive against an enemy (using weapons) | Synonyms: onrush, onset, onslaught |
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| (noun) a decisive manner of beginning a musical tone or phrase | Synonyms: tone-beginning |
| (noun) the act of attacking | Synonyms: attempt |
| (noun) ideas or actions intended to deal with a problem or situation | Synonyms: approach, plan of attack |
| (noun) an offensive move in a sport or game | - |
| (noun) strong criticism | - |
| (noun) intense adverse criticism | Synonyms: blast, fire, flack, flak |
| (noun) the onset of a corrosive or destructive process (as by a chemical agent) | - |
| (noun) a sudden occurrence of an uncontrollable condition | - |
| (verb) begin to injure | - |
| (verb) set to work upon; turn one's energies vigorously to a task | - |
| (verb) attack in speech or writing | Synonyms: assail, assault, lash out, round, snipe |
| (verb) launch an attack or assault on; begin hostilities or start warfare with | Synonyms: assail |
| (verb) take the initiative and go on the offensive | Synonyms: aggress |
| (verb) attack someone physically or emotionally | Synonyms: assail, assault, set on |
| attacker | (noun) someone who attacks | Synonyms: aggressor, assailant, assaulter |
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| attacking | (adjective) disposed to attack | Synonyms: assaultive |
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| attain | (verb) reach a point in time, or a certain state or level | Synonyms: hit, reach |
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| (verb) reach a destination, either real or abstract | Synonyms: arrive at, gain, hit, make, reach |
| (verb) find unexpectedly | Synonyms: chance on, chance upon, come across, come upon, discover, fall upon, happen upon, light upon, strike |
| (verb) to gain with effort | Synonyms: accomplish, achieve, reach |
| attainability | (noun) the state of being achievable | Synonyms: achievability, attainableness |
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| attainable | (adjective) capable of being attained or accomplished | Synonyms: come-at-able |
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| attainableness | (noun) the state of being achievable | Synonyms: achievability, attainability |
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| attainder | (noun) cancellation of civil rights | Synonyms: civil death |
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| attained | (adjective) achieved or reached | - |
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| attainment | (noun) the act of achieving an aim | - |
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| (noun) arrival at a new stage | - |
| (noun) an ability that has been acquired by training | Synonyms: accomplishment, acquirement, acquisition, skill |
| attaint | (verb) condemn by attainder | - |
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| (verb) bring shame or dishonor upon | Synonyms: disgrace, dishonor, dishonour, shame |
| attar | (noun) essential oil or perfume obtained from flowers | Synonyms: atar, athar, ottar |
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| attemper | (verb) modify the temperature of | - |
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| attempt | (noun) earnest and conscientious activity intended to do or accomplish something | Synonyms: effort, endeavor, endeavour, try |
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| (noun) the act of attacking | Synonyms: attack |
| (verb) enter upon an activity or enterprise | Synonyms: set about, undertake |
| (verb) make an effort or attempt | Synonyms: assay, essay, seek, try |
| attempted | (adjective) tried unsuccessfully | - |
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| attempter | (noun) one who tries | Synonyms: essayer, trier |
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| attend | (verb) give heed (to) | Synonyms: advert, give ear, hang, pay heed |
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| (verb) work for, or be a servant to | Synonyms: assist, attend to, serve, wait on |
| (verb) take charge of or deal with | Synonyms: look, see, take care |
| (verb) be present at (meetings, church services, university), etc. | Synonyms: go to |
| (verb) to accompany as a circumstance or follow as a result | - |
| attendance | (noun) the act of being present (at a meeting or event etc.) | Synonyms: attending |
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| (noun) the number of people that are present | - |
| (noun) the frequency with which a person is present | - |
| attendant | (adjective) being present (at a meeting or event, etc.) | - |
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| (adjective) occurring with or following as a consequence | Synonyms: accompanying, collateral, concomitant, consequent, ensuant, incidental, resultant, sequent |
| (noun) an event or situation that happens at the same time as or in connection with another | Synonyms: accompaniment, co-occurrence, concomitant |
| (noun) someone who waits on or tends to or attends to the needs of another | Synonyms: attender, tender |
| (noun) a person who is present and participates in a meeting | Synonyms: attendee, attender, meeter |
| attended | (adjective) playing or singing with instrumental or vocal accompaniment | Synonyms: accompanied |
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| (adjective) having a caretaker or other watcher | Synonyms: tended to |
| attendee | (noun) a person who is present and participates in a meeting | Synonyms: attendant, attender, meeter |
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| attender | (noun) someone who waits on or tends to or attends to the needs of another | Synonyms: attendant, tender |
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| (noun) a person who is present and participates in a meeting | Synonyms: attendant, attendee, meeter |
| (noun) someone who listens attentively | Synonyms: auditor, hearer, listener |
| attending | (adjective) giving practical help to | Synonyms: ministrant |
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| (noun) the act of being present (at a meeting or event etc.) | Synonyms: attendance |
| (noun) the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others | Synonyms: attention |
| attention | (noun) the work of providing treatment for or attending to someone or something | Synonyms: aid, care, tending |
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| (noun) a courteous act indicating affection | - |
| (noun) a motionless erect stance with arms at the sides and feet together; assumed by military personnel during drill or review | - |
| (noun) the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others | Synonyms: attending |
| (noun) the faculty or power of mental concentration | - |
| (noun) a general interest that leads people to want to know more | - |
| attentional | (adjective) of or relating to attention | - |
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| attentive | (adjective) (often followed by `to') giving care or attention | - |
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| (adjective) taking heed; giving close and thoughtful attention | Synonyms: heedful, paying attention, thoughtful |
| attentively | (adverb) with attention; in an attentive manner | - |
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| attentiveness | (noun) the trait of being considerate and thoughtful of others | - |
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| (noun) the trait of being observant and paying attention | - |
| (noun) paying particular notice (as to children or helpless people) | Synonyms: heed, paying attention, regard |
| attenuate | (adjective) reduced in strength | Synonyms: attenuated, faded, weakened |
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| (verb) become weaker, in strength, value, or magnitude | - |
| (verb) weaken the consistency of (a chemical substance) | Synonyms: rarefy |
| attenuated | (adjective) reduced in strength | Synonyms: attenuate, faded, weakened |
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| (adjective) of an electrical signal; reduced in amplitude with little or no distortion | - |
| attenuation | (noun) the property of something that has been weakened or reduced in thickness or density | - |
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| (noun) weakening in force or intensity | Synonyms: fading |
| attenuator | (noun) an electrical device for attenuating the strength of an electrical signal | - |
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| attest | (verb) authenticate, affirm to be true, genuine, or correct, as in an official capacity | - |
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| (verb) provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes | Synonyms: certify, demonstrate, evidence, manifest |
| (verb) give testimony in a court of law | Synonyms: bear witness, take the stand, testify |
| (verb) establish or verify the usage of | - |
| attestant | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestator, attestor, witness |
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| (noun) someone who affirms or vouches for the correctness or truth or genuineness of something | Synonyms: attester |
| attestation | (noun) the action of bearing witness | - |
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| (noun) the evidence by which something is attested | - |
| attestator | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestant, attestor, witness |
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| attested | (adjective) established as genuine | Synonyms: authenticated, documented |
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| attester | (noun) someone who affirms or vouches for the correctness or truth or genuineness of something | Synonyms: attestant |
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| attestor | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestant, attestator, witness |
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| attic | (noun) floor consisting of open space at the top of a house just below roof; often used for storage | Synonyms: garret, loft |
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| (noun) (architecture) a low wall at the top of the entablature; hides the roof | - |
| (noun) informal terms for a human head | Synonyms: bean, bonce, dome, noggin, noodle |
| attire | (noun) clothing of a distinctive style or for a particular occasion | Synonyms: dress, garb |
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| (verb) put on special clothes to appear particularly appealing and attractive | Synonyms: deck out, deck up, dress up, fancy up, fig out, fig up, get up, gussy up, overdress, prink, rig out, tog out, tog up, trick out, trick up |
| attired | (adjective) dressed or clothed especially in fine attire; often used in combination | Synonyms: appareled, dressed, garbed, garmented, habilimented, robed |
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| attitude | (noun) a theatrical pose created for effect | - |
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| (noun) the arrangement of the body and its limbs | Synonyms: position, posture |
| (noun) a complex mental state involving beliefs and feelings and values and dispositions to act in certain ways | Synonyms: mental attitude |
| (noun) position of aircraft or spacecraft relative to a frame of reference (the horizon or direction of motion) | - |
| attitudinal | (adjective) of or relating to attitudes | - |
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| attitudinise | (verb) assume certain affected attitudes | Synonyms: attitudinize |
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| attitudinize | (verb) assume certain affected attitudes | Synonyms: attitudinise |
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| attorn | (verb) acknowledge a new land owner as one's landlord | - |
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| attorney | (noun) a professional person authorized to practice law; conducts lawsuits or gives legal advice | Synonyms: lawyer |
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| attorneyship | (noun) the position of attorney | - |
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| attosecond | (noun) one quintillionth (10^-18) of a second; one thousandth of a femtosecond | - |
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| attract | (verb) direct toward itself or oneself by means of some psychological power or physical attributes | Synonyms: draw, draw in, pull, pull in |
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| (verb) exert a force on (a body) causing it to approach or prevent it from moving away | - |
| (verb) be attractive to | Synonyms: appeal |
| attractable | (adjective) capable of being magnetized or attracted by a magnet | - |
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| attracter | (noun) a characteristic that provides pleasure and attracts | Synonyms: attraction, attractive feature, attractor, magnet |
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| (noun) (physics) a point in the ideal multidimensional phase space that is used to describe a system toward which the system tends to evolve regardless of the starting conditions of the system | Synonyms: attractor |
| (noun) an entertainer who attracts large audiences | Synonyms: attraction, attractor, draw, drawing card |
| attraction | (noun) the quality of arousing interest; being attractive or something that attracts | Synonyms: attractiveness |
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| (noun) a characteristic that provides pleasure and attracts | Synonyms: attracter, attractive feature, attractor, magnet |
| (noun) an entertainment that is offered to the public | - |
| (noun) an entertainer who attracts large audiences | Synonyms: attracter, attractor, draw, drawing card |
| (noun) the force by which one object attracts another | Synonyms: attractive force |
| attractive | (adjective) pleasing to the eye or mind especially through beauty or charm | - |
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| (adjective) having the properties of a magnet; the ability to draw or pull | - |
| (adjective) having power to arouse interest | - |
| attractively | (adverb) in a beautiful manner | Synonyms: beautifully |
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| attractiveness | (noun) sexual allure | - |
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| (noun) the quality of arousing interest; being attractive or something that attracts | Synonyms: attraction |
| attractor | (noun) a characteristic that provides pleasure and attracts | Synonyms: attracter, attraction, attractive feature, magnet |
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| (noun) (physics) a point in the ideal multidimensional phase space that is used to describe a system toward which the system tends to evolve regardless of the starting conditions of the system | Synonyms: attracter |
| (noun) an entertainer who attracts large audiences | Synonyms: attracter, attraction, draw, drawing card |
| attributable | (adjective) capable of being attributed | - |
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| attribute | (noun) an abstraction belonging to or characteristic of an entity | - |
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| (noun) a construct whereby objects or individuals can be distinguished | Synonyms: dimension, property |
| (verb) attribute or credit to | Synonyms: ascribe, assign, impute |
| (verb) decide as to where something belongs in a scheme | Synonyms: assign |
| attribution | (noun) assigning to a cause or source | Synonyms: ascription |
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| (noun) assigning some quality or character to a person or thing | Synonyms: ascription |
| attributive | (adjective) of adjectives; placed before the nouns they modify | Synonyms: prenominal |
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| attributively | (adverb) in an attributive manner | - |
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| attrited | (adjective) worn by rubbing or friction | - |
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| attrition | (noun) the act of rubbing together; wearing something down by friction | - |
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| (noun) a wearing down to weaken or destroy | - |
| (noun) sorrow for sin arising from fear of damnation | Synonyms: contriteness, contrition |
| (noun) the wearing down of rock particles by friction due to water or wind or ice | Synonyms: abrasion, detrition, grinding |
| (noun) erosion by friction | Synonyms: abrasion, corrasion, detrition |
| attritional | (adjective) relating to or caused by attrition | - |
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| attune | (verb) adjust or accustom to; bring into harmony with | - |
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| backscatter | (verb) scatter (radiation) by the atoms of the medium through which it passes | - |
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| battalion | (noun) an army unit usually consisting of a headquarters and three or more companies | - |
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| (noun) a large indefinite quantity | Synonyms: large number, multitude, pack, plurality |
| batten | (noun) a strip fixed to something to hold it firm | - |
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| (noun) stuffing made of rolls or sheets of cotton wool or synthetic fiber | Synonyms: batting |
| (verb) secure with battens | - |
| (verb) furnish with battens | Synonyms: batten down, secure |
| batter | (noun) a liquid or semiliquid mixture, as of flour, eggs, and milk, used in cooking | - |
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| (noun) (baseball) a ballplayer who is batting | Synonyms: batsman, hitter, slugger |
| (verb) make a dent or impression in | Synonyms: dinge |
| (verb) strike violently and repeatedly | Synonyms: baste, clobber |
| (verb) strike against forcefully | Synonyms: buffet, knock about |
| battercake | (noun) a flat cake of thin batter fried on both sides on a griddle | Synonyms: flannel-cake, flannel cake, flapcake, flapjack, griddlecake, hot cake, hotcake, pancake |
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| battered | (adjective) exhibiting symptoms resulting from repeated physical and emotional injury | - |
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| (adjective) damaged by blows or hard usage | Synonyms: beat-up, beaten-up |
| (adjective) damaged especially by hard usage | - |
| battering | (noun) the act of subjecting to strong attack | Synonyms: banging |
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| battery | (noun) an assault in which the assailant makes physical contact | Synonyms: assault and battery |
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| (noun) the heavy fire of artillery to saturate an area rather than hit a specific target | Synonyms: barrage, barrage fire, bombardment, shelling |
| (noun) a device that produces electricity; may have several primary or secondary cells arranged in parallel or series | Synonyms: electric battery |
| (noun) a series of stamps operated in one mortar for crushing ores | Synonyms: stamp battery |
| (noun) a collection of related things intended for use together | - |
| (noun) group of guns or missile launchers operated together at one place | - |
| (noun) a unit composed of the pitcher and catcher | - |
| batting | (noun) (baseball) the batter's attempt to get on base | - |
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| (noun) stuffing made of rolls or sheets of cotton wool or synthetic fiber | Synonyms: batten |
| battle | (noun) a hostile meeting of opposing military forces in the course of a war | Synonyms: conflict, engagement, fight |
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| (noun) an energetic attempt to achieve something | Synonyms: struggle |
| (noun) an open clash between two opposing groups (or individuals) | Synonyms: conflict, struggle |
| (verb) battle or contend against in or as if in a battle | Synonyms: combat |
| battledore | (noun) an ancient racket game | Synonyms: battledore and shuttlecock |
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| (noun) a light long-handled racket used by badminton players | Synonyms: badminton racket, badminton racquet |
| battlefield | (noun) a region where a battle is being (or has been) fought | Synonyms: battleground, field, field of battle, field of honor |
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| battlefront | (noun) the line along which opposing armies face each other | Synonyms: front, front line |
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| battleful | (adjective) having or showing a ready disposition to fight | Synonyms: bellicose, combative |
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| battleground | (noun) a region where a battle is being (or has been) fought | Synonyms: battlefield, field, field of battle, field of honor |
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| battlement | (noun) a rampart built around the top of a castle with regular gaps for firing arrows or guns | Synonyms: crenelation, crenellation |
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| battlemented | (adjective) having or resembling repeated square indentations like those in a battlement | Synonyms: castellated, castled, crenelated, embattled |
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| (adjective) protected with battlements or parapets with indentations or embrasures for shooting through | - |
| battler | (noun) someone who fights (or is fighting) | Synonyms: belligerent, combatant, fighter, scrapper |
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| battleship | (noun) large and heavily armoured warship | Synonyms: battlewagon |
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| battlesight | (noun) an arrangement of sights that makes possible the rapid aiming of a firearm at short ranges | Synonyms: battle sight |
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| battlewagon | (noun) large and heavily armoured warship | Synonyms: battleship |
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| battue | (noun) a hunt in which beaters force the game to flee in the direction of the hunter | - |
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| (noun) indiscriminate slaughter | Synonyms: bloodbath, bloodletting, bloodshed |
| batty | (adjective) informal or slang terms for mentally irregular | Synonyms: around the bend, balmy, barmy, bats, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kookie, kooky, loco, loony, loopy, nuts, nutty, round the bend, wacky, whacky |
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| bespatter | (verb) spot, splash, or soil | Synonyms: spatter |
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