aback  | ad. by surprise; behind; in the rear  |  
 abbreviation  | n. shortening something by omitting parts of it  |  
 abolish  | v. cancel; put an end to; destroy completely  |  
 aboriginal  | a. being the first of its kind in a region; primitive; native  |  
 abound  | v. be full of; be plentiful  |  
 abrasion  | n. scratch; friction  |  
 abridge  | v. condense; shorten; reduce length of written text  |  
 abundance  | n. great or plentiful amount; fullness to overflowing  |  
 accelerate  | v. move faster; cause to develop or progress more quickly; occur sooner than expected  |  
 acclaim  | v. applaud; announce with great approval  |  
 accommodation  | n. living quarters provided for public convenience; something that meets a need; convenience  |  
 accord  | n. settlement or compromise of conflicting opinions; written agreement between two states  |  
 accumulate  | v. pile up; collect;  mount up; increase  |  
 accumulation  | n. act of gathering or amassing, as into a heap or pile  |  
 accuser  | n. one who accuses; one who brings a charge of crime or fault  |  
 acquaint  | v. inform about; cause to come to know personally; make familiar  |  
 acquiesce  | v. consent or comply passively or without protest; assent  |  
 adept  | a. expert at; very skilled; having or showing knowledge and skill and aptitude  |  
 adhere  | v. stick fast; stick to firmly; be compatible or in accordance with  |  
 adjacent  | a. adjoining; neighboring; close to; lying near  |  
 adjoin  | v. be next to; be contiguous to; border on  |  
 administrate  | v. administer; supply; supervise or be in charge of  |  
 adolescence  | n. state of growing up from childhood to manhood or womanhood; transitional period between youth and maturity  |  
 adoption  | n. accepting with approval; favorable reception  |  
 advent  | n. coming or arrival, especially of something extremely important  |  
 adverse  | a. in opposing direction; harmful or unfavorable; acting or serving to oppose  |  
 aerial  | a. of the air or atmosphere; produced by or found in the air; performed in the air  |  
 aesthetic  | a. elegant or tasteful; of or concerning appreciation of beauty or good taste  |  
 affectionately  | ad. with affection; lovingly; fondly; tenderly; kindly  |  
 affiliate  |  n. A person, organization, or establishment associated with another, as a subordinate, subsidiary, or member  |  
 affix  | v. fasten; append; add on; secure to something  |  
 afflict  | v. cause pain, suffering or distress  |  
 affluent  | a. generously supplied with money, property, or possessions; prosperous or rich; plentiful; abundant  |  
 aggregate  | v. gather into a mass, sum, or whole; amount to  |  
 agitation  | n. anxiety; extreme emotional disturbance  |  
 agreeable  | a. ready to consent or submit; acceptable  |  
 airing  | a. exposure to air for freshening or drying; exposure to public attention; radio or television broadcast  |  
 aisle  | n. a passageway between rows of seats or shelves  |  
 albeit  | ad. even though; although; notwithstanding  |  
 allege  | v. state without proof; assert to be true  |  
 alleviate  | v. provide physical relief, as from pain; make easier; remove in part  |  
 allocate  | v. assign; distribute according to plan  |  
 allot  | v. parcel out in parts or portions; distribute to each individual concerned; assign as a share or lot  |  
 alloy  | v. combine; mix; make less pure; lessen or moderate  |  
 alphabetical  | a. arranged in customary order of the letters of a language  |  
 ambiguity  | n. state of being ambiguous; doubtfulness or uncertainty  |  
 ambiguous  | a. unclear or doubtful in meaning  |  
 amend  | v. change for the better; improve; remove faults or errors  |  
 amid  | ad. in the middle of; among; surrounded by  |  
 amidst  | ad. amid; in the middle of; among  |  
 amphibian  | a. able to live both on land and in water  |  
 amplify  | v. broaden or clarify by expanding; intensify; make larger or more powerful; increase  |  
 analyse  | v. resolve anything complex into its elements; separate into parts for purpose of examination of each separately  |  
 analytical  | a. of analysis; resolving into elements or parts  |  
 ancestor  | n. forefather; forebear; forerunner or predecessor  |  
 anecdote  | n. short account of amusing or interesting event; short narrative; secret story of history or biography  |  
 annihilate  | v. destroy completely; reduce to nonexistence  |  
 annuity  | n. annual payment of allowance or income; periodical payment, amounting to a fixed sum in each year  |  
 anoint  | v. apply oil, ointment, or a similar substance to; choose by or as if by divine intervention  |  
 antagonism  | n. active resistance; condition of being an opposing principle, force, or factor  |  
 antarctic  | a. opposite to the northern or arctic pole; relating to the southern pole or to the region near it  |  
 antenna  | n. metallic apparatus for sending or receiving electromagnetic waves  |  
 anthology  | n. book of literary selections by various authors  |  
 antonym  | n. word of opposite meaning; counter term  |  
 apex  | n. highest point; the vertex; usually pointed end of an object; the tip  |  
 apologetic  | a. offering or expressing an apology or excuse; serving as or containing a formal justification or defense  |  
 apparatus  | n. a group of parts that work together to perform given function; appliance or device for particular purpose  |  
 appease  | v. bring peace, quiet, or calm to; satisfy or relieve  |  
 append  | v. attach; add as supplement or appendix  |  
 appliance  | n. durable goods for home or office use; device or instrument for household use  |  
 appraisal  | n. assessment; evaluation; the classification of someone or something with respect to its worth   |  
 appreciable  | a. considerable; perceptible  |  
 apprentice  | n. works for an expert to learn a trade; beginner; learner  |  
 approximate  | v. approach; come near  |  
 apt  | a. likely; exactly suitable; appropriate; quick to learn or understand  |  
 aquatic  | a. consisting of, relating to, or being in water  |  
 arbitrary  | a. randomly chosen; determined by chance or impulse, and not by reason or principle  |  
 archaic  | a. no longer current or applicable; antiquated  |  
 ardent  | a. displaying or by strong enthusiasm or devotion; passionate  |  
 arduous  | a. demanding great effort or labor; difficult  |  
 arid  | a. lacking moisture, especially having insufficient rainfall to support trees or woody plants  |  
 armour  | n. defensive covering, as of metal, wood, or leather, worn to protect the body against weapons  |  
 arouse  | v. excite; stimulate; awaken from or as if from sleep  |  
 array  | v. set out for display or use; place in orderly arrangement  |  
 arsenal  | n. stock or supply, usually of weapons  |  
 ascent  | n. the act of rising or going upward  |  
 ascertain  | v. find out for certain; discover with certainty; make sure of  |  
 ascribe  | v. inscribe or dedicate; attribute to a specified cause, source, or origin; assign as a quality  |  
 aspiration  | n. ambition; longing  |  
 aspire  | v. seek to attain; long for; strive toward an end  |  
 assert  | v. declare or state with confidence; put oneself forward boldly  |  
 assorted  | a. varied; miscellaneous  |  
 astound  | v. affect with wonder; surprise; shock  |  
 astronaut  | n. person to pilot, navigate, or as a crew member of spacecraft  |  
 asylum  | n. a place offering protection and shelter  |  
 attain  | v. achieve or accomplish; gain  |  
 attendee  | n. person who is present and participates in a meeting  |  
 attribute  | n. essential quality; reputation; honor  |  
 audible  | a. perceptible; heard or perceptible by the ear  |  
 augment  | v. make greater, as in size, extent, or quantity  |  
 authenticity  | n. quality of being genuine or trustworthy  |  
 authoritative  | a. having weight of authority; peremptory and dictatorial  |  
 automate  | v. replace or enhance human labor with machines  |  
 automation  | n. act or process of converting the controlling of a machine or device to a more automatic system, such as computer or electronic controls  |  
 autonomy  | n. independence; self-government or the right of self-government; self-determination  |  
 auxiliary  | a. helper, additional or subsidiary  |  
 avail  | v. turn to advantage of; be of service to; profit; promote  |  
 avalanche  | n. fall or slide of a large mass, as of snow or rock, down a mountainside  |  
 avenue  | n. a method or means by which something may be accomplished  |  
 avert  | v. prevent; turn or cause to turn off or away  |  
 avian  | n. thin A bird-like or flying creature  |  
 aviation  | n. design, development, and production of aircraft  |  
 awake  | v. rouse from sleep;stir the interest of; excite  |  
 axis  | n. the center around which something rotates; pivot  |  
 backstage  | ad. In or toward the area behind the performing space in a theater, especially the area comprising the dressing rooms  |  
 bacterium  | n. single celled organism with no nucleus  |  
 badminton  | n. game played on a court with light long-handled rackets  |  
 baffle  | v. frustrate as by confusing or perplexing; impede force or movement of  |  
 bamboo  | n. plant of the family of grasses, and genus Bambusa, growing in tropical countries  |  
 barbaric  | a. resembling uncivilized persons, lacking refinement  |  
 barometer  | n. instrument for determining the weight or pressure of the atmosphere  |  
 barrage  | n. an artificial obstruction, such as a dam, built in a watercourse to increase its depth or to divert its flow; rapid and continuous delivery of linguistic communication  |  
 barricade  | n. structure set up across a route of access to obstruct the passage of an enemy  |  
 barter  | v. trade goods or services without the exchange of money  |  
 bay  | n. body of water partially enclosed by land but with a wide mouth; reddish-brown animal, especially a horse having a black tail  |  
 bead  | n. small piece of material, such as glass, plastic, or wood, that is pierced for stringing  |  
 beautician  | n. one skilled in giving cosmetic treatments; one who does hair styling, manicures, and other beauty treatments  |  
 beneficial  | a. helpful; tending to promote physical well-being  |  
 berth  | n. space for ship to dock or anchor; allotted place; place to sleep or stay; appointment or job  |  
 beset  | v. attack from all sides; trouble persistently; hem in  |  
 bewilder  | v. lead into perplexity or confusion; perplex with mazes  |  
 bibliography  | n. list of works of a specific author or publisher; list of writings relating to a given subject  |  
 bilateral  | a. two-sided; mutual  |  
 bilingual  | n. using or able to use two languages, especially with equal or nearly equal fluency  |  
 bitumen  | n. mineral pitch; black, tarry substance, burning with a bright flame  |  
 blade  | n. sharp cutting edge of a knife; sword or knife; swords-man  |  
 blaze  | n. brilliant burst of fire; flame  |  
 bloc  | n. a group of nations, parties, or persons united for common action  |  
 blot  | n. spot or stain, as of ink on paper; blur; weak point or failing  |  
 blunder  | n. serious mistake typically caused by ignorance or confusion  |  
 boast  | v. show off oneself;  speak of with excessive pride  |  
 bonding  | n. formation of a close human relationship, as between friends; emotional and physical attachment occurring between a parent or parent figure  |  
 bookcase  | n. case with shelves for holding books, especially one with glazed doors  |  
 bookkeeper  | n. one who keeps accounts; one who has charge of keeping books and accounts in an office  |  
 bookstall  | n. stall where books are sold, as on a street; table with enclosed sides, for displaying books for sale  |  
 boom  | n. deep resonant sound, as of an explosion  |  
 boot up  | v. start a computer using its bootstrap procedure  |  
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