| abcoulomb | (noun) a unit of electrical charge equal to 10 coulombs | - |
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| accumbent | (adjective) lying down; in a position of comfort or rest | Synonyms: decumbent, recumbent |
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| adumbrate | (verb) describe roughly or briefly or give the main points or summary of | Synonyms: outline, sketch |
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| (verb) give to understand | Synonyms: insinuate, intimate |
| adumbration | (noun) a sketchy or imperfect or faint representation | - |
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| (noun) the act of providing vague advance indications; representing beforehand | Synonyms: foreshadowing, prefiguration |
| adumbrative | (adjective) indistinctly prophetic | Synonyms: foreshadowing, prefigurative |
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| aeroembolism | (noun) obstruction of the circulatory system caused by an air bubble as, e.g., accidentally during surgery or hypodermic injection or as a complication from scuba diving | Synonyms: air embolism, gas embolism |
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| (noun) pain resulting from rapid change in pressure | Synonyms: air embolism, bends, caisson disease, decompression sickness, gas embolism |
| akimbo | (adjective) (used of arms and legs) bent outward with the joint away from the body | - |
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| (adverb) with hands on hips and elbows extending outward | - |
| alembic | (noun) an obsolete kind of container used for distillation; two retorts connected by a tube | - |
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| alumbloom | (noun) any of several herbs of the genus Heuchera | Synonyms: alumroot |
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| ambage | (noun) a style that involves indirect ways of expressing things | Synonyms: circumlocution, periphrasis |
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| ambages | (noun) (archaic) roundabout or mysterious ways of action | - |
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| ambagious | (adjective) roundabout and unnecessarily wordy | Synonyms: circumlocutious, circumlocutory, periphrastic |
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| ambassador | (noun) a diplomat of the highest rank; accredited as representative from one country to another | Synonyms: embassador |
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| (noun) an informal representative | - |
| ambassadorial | (adjective) of or relating to or characteristic of ambassadors | - |
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| ambassadorship | (noun) the post of ambassador | - |
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| ambassadress | (noun) a woman ambassador | - |
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| amber | (adjective) of a medium to dark brownish yellow color | Synonyms: brownish-yellow, yellow-brown |
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| (noun) a deep yellow color | Synonyms: gold |
| (noun) a hard yellowish to brownish translucent fossil resin; used for jewelry | - |
| amberbell | (noun) eastern North American dogtooth having solitary yellow flowers marked with brown or purple and spotted interiors | Synonyms: Erythronium americanum, trout lily, yellow adder's tongue |
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| amberfish | (noun) any of several amber to coppery fork-tailed warm-water carangid fishes | Synonyms: amberjack |
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| ambergris | (noun) waxy substance secreted by the sperm whale and found floating at sea or washed ashore; used in perfume | - |
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| amberjack | (noun) any of several amber to coppery fork-tailed warm-water carangid fishes | Synonyms: amberfish |
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| ambiance | (noun) the atmosphere of an environment | Synonyms: ambience |
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| (noun) a particular environment or surrounding influence | Synonyms: ambience, atmosphere |
| ambidexterity | (noun) the property of being equally skillful with each hand | Synonyms: ambidextrousness |
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| ambidextrous | (adjective) equally skillful with each hand | Synonyms: two-handed |
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| (adjective) marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another | Synonyms: deceitful, double-dealing, double-faced, double-tongued, duplicitous, Janus-faced, two-faced |
| ambidextrousness | (noun) the property of being equally skillful with each hand | Synonyms: ambidexterity |
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| ambience | (noun) the atmosphere of an environment | Synonyms: ambiance |
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| (noun) a particular environment or surrounding influence | Synonyms: ambiance, atmosphere |
| ambient | (adjective) completely enveloping | - |
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| ambiguity | (noun) unclearness by virtue of having more than one meaning | Synonyms: equivocalness |
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| (noun) an expression whose meaning cannot be determined from its context | - |
| ambiguous | (adjective) having more than one possible meaning | - |
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| (adjective) open to two or more interpretations; or of uncertain nature or significance; or (often) intended to mislead | Synonyms: equivocal |
| (adjective) having no intrinsic or objective meaning; not organized in conventional patterns | - |
| ambiguously | (adverb) in an ambiguous manner | Synonyms: equivocally |
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| ambit | (noun) an area in which something acts or operates or has power or control: | Synonyms: compass, orbit, range, reach, scope |
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| ambition | (noun) a strong drive for success | Synonyms: ambitiousness |
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| (noun) a cherished desire | Synonyms: aspiration, dream |
| (verb) have as one's ambition | - |
| ambitionless | (adjective) having little desire for success or achievement | Synonyms: unambitious |
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| ambitious | (adjective) having a strong desire for success or achievement | - |
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| (adjective) requiring full use of your abilities or resources | Synonyms: challenging |
| ambitiously | (adverb) with ambition; in an ambitious and energetic manner | Synonyms: determinedly |
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| ambitiousness | (noun) a strong drive for success | Synonyms: ambition |
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| ambivalence | (noun) mixed feelings or emotions | Synonyms: ambivalency |
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| ambivalency | (noun) mixed feelings or emotions | Synonyms: ambivalence |
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| ambivalent | (adjective) uncertain or unable to decide about what course to follow | - |
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| ambiversion | (noun) (psychology) a balanced disposition intermediate between extroversion and introversion | - |
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| ambiversive | (adjective) intermediate between introversive and extroversive | - |
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| amble | (noun) a leisurely walk (usually in some public place) | Synonyms: perambulation, promenade, saunter, stroll |
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| (verb) walk leisurely | Synonyms: mosey |
| ambler | (noun) someone who walks at a leisurely pace | Synonyms: saunterer, stroller |
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| amblygonite | (noun) a white or grey mineral consisting of lithium aluminum phosphate; a source of lithium | - |
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| amblyopia | (noun) visual impairment without apparent organic pathology | - |
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| amblyopic | (adjective) pertaining to a kind of visual impairment without apparent organic pathology | - |
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| ambo | (noun) a platform raised above the surrounding level to give prominence to the person on it | Synonyms: dais, podium, pulpit, rostrum, soapbox, stump |
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| amboceptor | (noun) an immune body formed in the blood during infection or immunization that serves to link the complement to the antigen. | - |
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| amboyna | (noun) tree native to southeastern Asia having reddish wood with a mottled or striped black grain | Synonyms: padauk, padouk, Pterocarpus indicus |
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| (noun) mottled curly-grained wood of Pterocarpus indicus | Synonyms: Andaman redwood |
| ambrosia | (noun) (classical mythology) the food and drink of the gods; mortals who ate it became immortal | Synonyms: nectar |
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| (noun) fruit dessert made of oranges and bananas with shredded coconut | - |
| (noun) any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma | Synonyms: bitterweed, ragweed |
| (noun) a mixture of nectar and pollen prepared by worker bees and fed to larvae | Synonyms: beebread |
| ambrosial | (adjective) worthy of the gods | Synonyms: ambrosian |
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| (adjective) extremely pleasing to the taste; sweet and fragrant | Synonyms: ambrosian, nectarous |
| ambrosian | (adjective) worthy of the gods | Synonyms: ambrosial |
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| (adjective) extremely pleasing to the taste; sweet and fragrant | Synonyms: ambrosial, nectarous |
| ambulacral | (adjective) pertaining to the ambulacra of radial echinoderms | - |
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| ambulacrum | (noun) one of the five areas on the undersurface of an echinoderm on which the tube feet are located | - |
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| ambulance | (noun) a vehicle that takes people to and from hospitals | - |
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| ambulant | (adjective) able to walk about | Synonyms: ambulatory |
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| ambulate | (verb) walk about; not be bedridden or incapable of walking | - |
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| ambulation | (noun) walking about | - |
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| ambulatory | (adjective) relating to or adapted for walking | - |
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| (adjective) able to walk about | Synonyms: ambulant |
| (noun) a covered walkway (as in a cloister) | - |
| 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 |
| ambush | (noun) the act of concealing yourself and lying in wait to attack by surprise | Synonyms: ambuscade, lying in wait, trap |
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| (verb) wait in hiding to attack | Synonyms: ambuscade, bushwhack, lie in wait, lurk, scupper, waylay |
| (verb) hunt (quarry) by stalking and ambushing | Synonyms: still-hunt |
| ambusher | (noun) an attacker who waits in a concealed position to launch a surprise attack | - |
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| ambystomid | (noun) small to moderate-sized terrestrial or semiaquatic New World salamander | Synonyms: ambystomid salamander |
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| antechamber | (noun) a large entrance or reception room or area | Synonyms: anteroom, entrance hall, foyer, hall, lobby, vestibule |
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| aplomb | (noun) great coolness and composure under strain | Synonyms: assuredness, cool, poise, sang-froid |
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| armband | (noun) a band worn around the upper arm | - |
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| (noun) worn around arm as identification or to indicate mourning | - |
| assemblage | (noun) the social act of assembling | Synonyms: assembly, gathering |
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| (noun) a system of components assembled together for a particular purpose | Synonyms: hookup |
| (noun) a group of persons together in one place | Synonyms: gathering |
| (noun) several things grouped together or considered as a whole | Synonyms: accumulation, aggregation, collection |
| assemble | (verb) create by putting components or members together | Synonyms: piece, put together, set up, tack, tack together |
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| (verb) collect in one place | Synonyms: foregather, forgather, gather, meet |
| (verb) get people together | Synonyms: gather, get together |
| assembler | (noun) a program to convert assembly language into machine language | Synonyms: assembly program |
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| assembling | (noun) the act of gathering something together | Synonyms: aggregation, collecting, collection |
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| assembly | (noun) the social act of assembling | Synonyms: assemblage, gathering |
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| (noun) the act of constructing something (as a piece of machinery) | Synonyms: fabrication |
| (noun) a group of machine parts that fit together to form a self-contained unit | - |
| (noun) a public facility to meet for open discussion | Synonyms: forum, meeting place |
| (noun) a unit consisting of components that have been fitted together | - |
| (noun) a group of persons who are gathered together for a common purpose | - |
| assemblyman | (noun) someone who is a member of a legislative assembly | - |
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| assemblywoman | (noun) a woman assemblyman | - |
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| bambino | (noun) a young child who is just beginning to walk | Synonyms: toddler, tot, yearling |
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| bamboo | (noun) woody tropical grass having hollow woody stems; mature canes used for construction and furniture | - |
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| (noun) the hard woody stems of bamboo plants; used in construction and crafts and fishing poles | - |
| bamboozle | (verb) conceal one's true motives from especially by elaborately feigning good intentions so as to gain an end | Synonyms: hoodwink, lead by the nose, play false, pull the wool over someone's eyes, snow |
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| barmbrack | (noun) a rich currant cake or bun | - |
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| beachcomber | (noun) a vagrant living on a beach | - |
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| bedchamber | (noun) a room used primarily for sleeping | Synonyms: bedroom, chamber, sleeping accommodation, sleeping room |
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| benumb | (verb) make numb or insensitive | Synonyms: blunt, dull, numb |
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| benumbed | (adjective) lacking sensation | Synonyms: asleep, numb |
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| (adjective) having lost or been caused to lose interest because of overexposure | Synonyms: dulled |
| bilimbi | (noun) East Indian evergreen tree bearing very acid fruit | Synonyms: Averrhoa bilimbi |
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| bimbo | (noun) a young woman indulged by rich and powerful older men | - |
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| bomb | (noun) an explosive device fused to explode under specific conditions | - |
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| (noun) strong sealed vessel for measuring heat of combustion | Synonyms: bomb calorimeter |
| (noun) an event that fails badly or is totally ineffectual | Synonyms: dud, turkey |
| (verb) throw bombs at or attack with bombs | Synonyms: bombard |
| (verb) fail to get a passing grade | Synonyms: fail, flunk, flush it |
| bombard | (noun) a large shawm; the bass member of the shawm family | Synonyms: bombardon |
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| (verb) direct high energy particles or radiation against | - |
| (verb) address with continuously or persistently, as if with a barrage | Synonyms: barrage |
| (verb) throw bombs at or attack with bombs | Synonyms: bomb |
| (verb) cast, hurl, or throw repeatedly with some missile | Synonyms: pelt |
| bombardier | (noun) the member of a bomber crew responsible for using the bombsight and releasing the bombs on the target | - |
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| (noun) a noncommissioned officer in the British artillery | - |
| bombardment | (noun) the heavy fire of artillery to saturate an area rather than hit a specific target | Synonyms: barrage, barrage fire, battery, shelling |
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| (noun) an attack by dropping bombs | Synonyms: bombing |
| (noun) the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays) | - |
| (noun) the rapid and continuous delivery of linguistic communication (spoken or written) | Synonyms: barrage, onslaught, outpouring |
| bombardon | (noun) a large shawm; the bass member of the shawm family | Synonyms: bombard |
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| (noun) a tuba that coils over the shoulder of the musician | Synonyms: helicon |
| bombast | (noun) pompous or pretentious talk or writing | Synonyms: blah, claptrap, fustian, rant |
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| bombastic | (adjective) ostentatiously lofty in style | Synonyms: declamatory, large, orotund, tumid, turgid |
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| bombastically | (adverb) in a grandiose manner | Synonyms: grandiosely |
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| (adverb) in a turgid manner | Synonyms: turgidly |
| bombazine | (noun) a twilled fabric used for dresses; the warp is silk and the weft is worsted | - |
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| bomber | (noun) a military aircraft that drops bombs during flight | - |
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| (noun) a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States | Synonyms: Cuban sandwich, grinder, hero, hero sandwich, hoagie, hoagy, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge, zep |
| (noun) a person who plants bombs | - |
| bombie | (noun) an unexploded bomblet | - |
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| bombilate | (verb) make a buzzing sound | Synonyms: bombinate, buzz |
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| bombilation | (noun) sound of rapid vibration | Synonyms: bombination, buzz |
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| bombinate | (verb) make a buzzing sound | Synonyms: bombilate, buzz |
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| bombination | (noun) sound of rapid vibration | Synonyms: bombilation, buzz |
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| bombing | (noun) an attack by dropping bombs | Synonyms: bombardment |
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| (noun) the use of bombs for sabotage; a tactic frequently used by terrorists | - |
| bomblet | (noun) one of the smaller bombs that are released from a cluster bomb | Synonyms: cluster bomblet |
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