| abide | (verb) put up with something or somebody unpleasant | Synonyms: bear, brook, digest, endure, put up, stand, stick out, stomach, suffer, support, tolerate |
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| (verb) dwell | Synonyms: bide, stay |
| abode | (noun) housing that someone is living in | Synonyms: domicile, dwelling, dwelling house, habitation, home |
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| (noun) any address at which you dwell more than temporarily | Synonyms: residence |
| aborticide | (noun) the act of destroying a fetus | Synonyms: feticide |
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| (noun) a drug (or other chemical agent) that causes abortion | Synonyms: abortifacient, abortion-inducing drug |
| abrade | (verb) wear away | Synonyms: abrase, corrade, rub down, rub off |
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| (verb) rub hard or scrub | Synonyms: scour |
| acaracide | (noun) a chemical agent used to kill mites | Synonyms: acaricide |
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| acaricide | (noun) a chemical agent used to kill mites | Synonyms: acaracide |
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| accede | (verb) yield to another's wish or opinion | Synonyms: bow, defer, give in, submit |
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| (verb) to agree or express agreement | Synonyms: acquiesce, assent |
| (verb) take on duties or office | Synonyms: enter |
| accolade | (noun) a tangible symbol signifying approval or distinction | Synonyms: award, honor, honour, laurels |
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| acetaldehyde | (noun) a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs | Synonyms: ethanal |
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| acetamide | (noun) a colorless solid amide of acetic acid used as a solvent and in the synthesis of organic compounds | Synonyms: ethanamide |
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| acetanilide | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilid, phenylacetamide |
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| acrylamide | (noun) a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals | - |
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| actinide | (noun) any of a series of radioactive elements with atomic numbers 89 through 103 | Synonyms: actinoid, actinon |
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| ade | (noun) a sweetened beverage of diluted fruit juice | Synonyms: fruit drink |
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| aggrade | (verb) build up to a level by depositing sediment | - |
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| aide | (noun) someone who acts as assistant | Synonyms: auxiliary |
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| (noun) an officer who acts as military assistant to a more senior officer | Synonyms: adjutant, aide-de-camp |
| alcalde | (noun) a mayor or chief magistrate of a Spanish town | - |
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| aldehyde | (noun) any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids | - |
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| alidade | (noun) surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles | Synonyms: alidad |
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| (noun) surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments | Synonyms: alidad |
| allemande | (noun) egg-thickened veloute | Synonyms: allemande sauce |
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| allude | (verb) make a more or less disguised reference to | Synonyms: advert, touch |
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| alongside | (adverb) side by side | Synonyms: aboard |
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| altitude | (noun) elevation especially above sea level or above the earth's surface | Synonyms: height |
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| (noun) angular distance above the horizon (especially of a celestial object) | Synonyms: ALT, EL, elevation |
| (noun) the perpendicular distance from the base of a geometric figure to the opposite vertex (or side if parallel) | - |
| ambuscade | (noun) the act of concealing yourself and lying in wait to attack by surprise | Synonyms: ambush, lying in wait, trap |
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| (verb) wait in hiding to attack | Synonyms: ambush, bushwhack, lie in wait, lurk, scupper, waylay |
| amide | (noun) any organic compound containing the group -CONH2 | - |
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| amplitude | (noun) greatness of magnitude | - |
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| (noun) the property of copious abundance | Synonyms: bountifulness, bounty |
| (noun) (physics) the maximum displacement of a periodic wave | - |
| anhydride | (noun) a compound formed from one or more other compounds in a reaction resulting in removal of water | - |
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| anode | (noun) a positively charged electrode by which electrons leave an electrical device | - |
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| (noun) the negatively charged terminal of a voltaic cell or storage battery that supplies current | - |
| antecede | (verb) be earlier in time; go back further | Synonyms: antedate, forego, forgo, precede, predate |
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| anterograde | (adjective) of amnesia; affecting time immediately following trauma | - |
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| antinode | (noun) (physics) the point of maximum displacement in a periodic system | - |
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| antipode | (noun) direct opposite | - |
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| antitrade | (noun) winds blowing from west to east and lying above the trade winds in the tropics | Synonyms: antitrade wind |
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| aptitude | (noun) inherent ability | - |
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| arcade | (noun) a structure composed of a series of arches supported by columns | Synonyms: colonnade |
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| (noun) a covered passageway with shops and stalls on either side | - |
| arsenide | (noun) a compound of arsenic with a more positive element | - |
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| aside | (noun) a line spoken by an actor to the audience but not intended for others on the stage | - |
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| (noun) a message that departs from the main subject | Synonyms: digression, divagation, excursus, parenthesis |
| (adverb) on or to one side | - |
| (adverb) out of the way (especially away from one's thoughts) | Synonyms: away |
| (adverb) in reserve; not for immediate use | Synonyms: away, by |
| (adverb) not taken into account or excluded from consideration | Synonyms: apart |
| (adverb) placed or kept separate and distinct as for a purpose | Synonyms: apart |
| (adverb) in a different direction | Synonyms: away |
| astride | (adverb) with one leg on each side | Synonyms: astraddle |
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| (adverb) with the legs stretched far apart | - |
| atherodyde | (noun) a simple type of jet engine; must be launched at high speed | Synonyms: athodyd, flying drainpipe, ramjet, ramjet engine |
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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) | - |
| azide | (noun) a chemical compound containing the azido group combined with an element or radical | - |
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| azoimide | (noun) a colorless explosive liquid that is volatile and poisonous and foul-smelling | Synonyms: HN, hydrazoic acid, hydrogen azide |
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| backside | (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
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| (noun) the side of an object that is opposite its front | Synonyms: back end, rear |
| backslide | (verb) drop to a lower level, as in one's morals or standards | Synonyms: lapse |
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| bacteriacide | (noun) any chemical agent that destroys bacteria | Synonyms: bactericide |
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| bactericide | (noun) any drug that destroys bacteria or inhibits their growth | Synonyms: antibacterial, antibacterial drug |
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| (noun) any chemical agent that destroys bacteria | Synonyms: bacteriacide |
| ballade | (noun) a poem consisting of 3 stanzas and an envoy | - |
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| balustrade | (noun) a railing at the side of a staircase or balcony to prevent people from falling | Synonyms: balusters, banister, bannister, handrail |
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| barde | (verb) put a caparison on | Synonyms: bard, caparison, dress up |
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| barricade | (noun) a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc. | Synonyms: roadblock |
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| (noun) a barrier (usually thrown up hastily) to impede the advance of an enemy | - |
| (verb) block off with barricades | Synonyms: barricado |
| (verb) prevent access to by barricading | - |
| (verb) render unsuitable for passage | Synonyms: bar, block, block off, block up, blockade, stop |
| beatitude | (noun) a state of supreme happiness | Synonyms: beatification, blessedness |
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| bedside | (noun) space by the side of a bed (especially the bed of a sick or dying person) | - |
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| bestride | (verb) get up on the back of | Synonyms: climb on, get on, hop on, jump on, mount, mount up |
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| betide | (verb) become of; happen to | Synonyms: bechance, befall |
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| bichloride | (noun) a compound containing two chlorine atoms per molecule | Synonyms: dichloride |
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| bide | (verb) dwell | Synonyms: abide, stay |
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| bigarade | (noun) any of various common orange trees yielding sour or bitter fruit; used as grafting stock | Synonyms: bitter orange, bitter orange tree, Citrus aurantium, marmalade orange, Seville orange, sour orange |
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| biodegrade | (verb) break down naturally through the action of biological agents | - |
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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 |
| blende | (noun) an ore that is the chief source of zinc; consists largely of zinc sulfide in crystalline form | Synonyms: sphalerite, zinc blende |
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| blindside | (verb) attack or hit on or from the side where the attacked person's view is obstructed | - |
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| (verb) catch unawares, especially with harmful consequences | - |
| blockade | (noun) a war measure that isolates some area of importance to the enemy | Synonyms: encirclement |
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| (noun) prevents access or progress | - |
| (verb) impose a blockade on | Synonyms: seal off |
| (verb) obstruct access to | Synonyms: block off |
| (verb) render unsuitable for passage | Synonyms: bar, barricade, block, block off, block up, stop |
| (verb) hinder or prevent the progress or accomplishment of | Synonyms: block, embarrass, hinder, obstruct, stymie, stymy |
| blonde | (adjective) being or having light colored skin and hair and usually blue or grey eyes | Synonyms: blond, light-haired |
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| (noun) a light grayish yellow to near white | Synonyms: blond |
| (noun) a female person with fair skin and hair | - |
| bode | (verb) indicate, as with a sign or an omen | Synonyms: augur, auspicate, betoken, forecast, foreshadow, foretell, omen, portend, predict, prefigure, presage, prognosticate |
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| bolide | (noun) an especially luminous meteor (sometimes exploding) | Synonyms: fireball |
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| bride | (noun) a woman who has recently been married | - |
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| (noun) a woman participant in her own marriage ceremony | - |
| brigade | (noun) army unit smaller than a division, typically consisting of a small number of battalions | - |
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| (verb) form or unite into a brigade | - |
| broadside | (adjective) toward a full side | - |
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| (noun) the simultaneous firing of all the armament on one side of a warship | - |
| (noun) the whole side of a vessel from stem to stern | - |
| (noun) all of the armament that is fired from one side of a warship | - |
| (noun) an advertisement (usually printed on a page or in a leaflet) intended for wide distribution | Synonyms: bill, broadsheet, circular, flier, flyer, handbill, throwaway |
| (noun) a speech of violent denunciation | Synonyms: philippic, tirade |
| (adverb) with a side facing an object | - |
| (verb) collide with the broad side of | - |
| brocade | (noun) thick heavy expensive material with a raised pattern | - |
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| (verb) weave a design into (textiles) | - |
| bromide | (noun) a trite or obvious remark | Synonyms: banality, cliche, commonplace, platitude |
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| (noun) any of the salts of hydrobromic acid; formerly used as a sedative but now generally replaced by safer drugs | - |
| burnside | (noun) facial hair that has grown down the side of a man's face in front of the ears (especially when the rest of the beard is shaved off) | Synonyms: mutton chop, side-whiskers, sideburn |
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| cannonade | (noun) intense and continuous artillery fire | Synonyms: drumfire |
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| (verb) attack with cannons or artillery | - |
| canyonside | (noun) the steeply sloping side of a canyon | - |
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| carbamide | (noun) the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics | Synonyms: urea |
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| carbide | (noun) a binary compound of carbon with a more electropositive element | - |
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| cascade | (noun) a sudden downpour (as of tears or sparks etc) likened to a rain shower | Synonyms: shower |
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| (noun) a succession of stages or operations or processes or units | - |
| (noun) a small waterfall or series of small waterfalls | - |
| (verb) arrange (open windows) on a computer desktop so that they overlap each other, with the title bars visible | - |
| (verb) rush down in big quantities, like a cascade | Synonyms: cascade down |
| cathode | (noun) a negatively charged electrode that is the source of electrons entering an electrical device | - |
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| (noun) the positively charged terminal of a voltaic cell or storage battery that supplies current | - |
| cavalcade | (noun) a procession of people traveling on horseback | - |
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| cede | (verb) relinquish possession or control over | Synonyms: deliver, give up, surrender |
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| (verb) give over; surrender or relinquish to the physical control of another | Synonyms: concede, grant, yield |
| centigrade | (adjective) of or relating to a temperature scale on which the freezing point of water is 0 degrees and the boiling point of water is 100 degrees | - |
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| centipede | (noun) chiefly nocturnal predacious arthropod having a flattened body of 15 to 173 segments each with a pair of legs, the foremost pair being modified as prehensors | - |
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| cerebroside | (noun) A cerebroside is any of various organic lipid compounds containing glucose or galactose and glucose; it occurs in the myelin sheath of cerebrospinal neurons. | - |
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| certitude | (noun) total certainty or greater certainty than circumstances warrant | Synonyms: cocksureness, overconfidence |
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| cestode | (noun) ribbonlike flatworms that are parasitic in the intestines of humans and other vertebrates | Synonyms: tapeworm |
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| cetrimide | (noun) a cationic detergent that is a powerful disinfectant | - |
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| charade | (noun) making a false outward show | Synonyms: masquerade |
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| (noun) a word acted out in an episode of the game of charades | - |
| chide | (verb) censure severely or angrily | Synonyms: bawl out, berate, call down, call on the carpet, chew out, chew up, dress down, have words, jaw, lambast, lambaste, lecture, rag, rebuke, remonstrate, reprimand, scold, take to task, trounce |
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| chlordiazepoxide | (noun) a tranquilizer (trade names Librium and Libritabs) used in the treatment of alcoholism | Synonyms: Libritabs, Librium |
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| chloride | (noun) any compound containing a chlorine atom | - |
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| (noun) any salt of hydrochloric acid (containing the chloride ion) | - |
| chlorothiazide | (noun) a diuretic drug (trade name Diuril) used in the treatment of edema and hypertension | Synonyms: Diuril |
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| cirripede | (noun) marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces | Synonyms: barnacle, cirriped |
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| citywide | (adjective) occurring or extending throughout a city | - |
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| clade | (noun) a group of biological taxa or species that share features inherited from a common ancestor | - |
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| cladode | (noun) a flattened stem resembling and functioning as a leaf | Synonyms: cladophyll, phylloclad, phylloclade |
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| cockade | (noun) an ornament (such as a knot of ribbon or a rosette) usually worn on the hat | - |
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| code | (noun) a coding system used for transmitting messages requiring brevity or secrecy | - |
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| (noun) a set of rules or principles or laws (especially written ones) | Synonyms: codification |
| (noun) (computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions | Synonyms: computer code |
| (noun) a series of letters, numbers or symbols assigned to something for the purpose of classification or identification | - |
| (verb) convert ordinary language into code | Synonyms: cipher, cypher, encipher, encrypt, inscribe, write in code |
| (verb) attach a code to | - |
| coincide | (verb) happen simultaneously | Synonyms: concur |
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| (verb) go with, fall together | Synonyms: co-occur, cooccur |
| (verb) be the same | - |
| collide | (verb) crash together with violent impact | Synonyms: clash |
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| (verb) cause to collide | - |
| (verb) be incompatible; be or come into conflict | Synonyms: clash, jar |
| collude | (verb) act in unison or agreement and in secret towards a deceitful or illegal purpose | Synonyms: conspire |
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| colonnade | (noun) structure consisting of a row of evenly spaced columns | - |
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| (noun) a structure composed of a series of arches supported by columns | Synonyms: arcade |