| Word | Part of Speech | Definition |
| abate | v | To subside or moderate. |
| abbreviate | v | To shorten; to make smaller. |
| aberrant | adj | Abnormal or deviant. |
| abolish | v | To cancel; to put an end to; to eradicate. |
| abrasive | adj | Rubbing away; causing irritation; harmful. |
| abstain | v | To refrain from use; to withdraw from participation. |
| abusive | adj | Insulting; physically or psychologically harmful. |
| academic | adj | Not practical; not useful; not directly applicable. |
| accessible | adj | Easy to approach; obtainable; within reach. |
| accessory | n | An additional object; a useful but not essential component of a whole. |
| accomplice | n | A partner in crime. |
| accountable | adj | Responsible; honorable and honest. |
| acerbity | n | Bitterness in tempter; acerbic. |
| acoustics | n | The science of sound; the sound characteristics of a singular room or venue. |
| acute | adj | Sharp; biting; quickly perceptive; keen. |
| adamant | adj | Inflexible; unwilling to change; hard. |
| addiction | n | A compulsive, often habitual need; a feeling of necessity for an item that is not strictly required to maintain health and longevity. |
| advent | n | An arrival. |
| adverse | adj | Going against; opposing; unfavorable. |
| affected | adj | Sometime that is acted up; any entity under the influence of something else. |
| affirmation | n | An assertion in the positive; a confirmation. |
| affliction | n | A condition of distress; a disease; the cause of suffering. |
| affront | v | To insult; intentional act of disrespect; to intentionally hurt the feelings of another person. |
| agenda | n | The items or list of items to be covered during a meeting; the plan of action. |
| agility | n | The ability to move in a coordinated and quick manner. |
| agitate | v | To stir up; disturb; to cause to move from a place of rest or peace. |
| agnostic | adj | Being skeptical of the existence of a god or any supreme being. |
| agrarian | adj | Pertaining to land or its cultivation. |
| alacrity | n | Cheerful promptness; eagerness to perform a specific deed, usually without hesitation. |
| alcove | n | A nook; a cranny; a recess; an enclosed space. |
| allegiance | n | Support; a sense of loyalty; duty towards an individual or specific cause. |
| allergy | n | A condition where a person is very sensitive to certain chemicals or substances in the environment; an exaggerated immune response to otherwise harmless stimuli. |
| amalgam | n | A combination of different things; a mixture of metals. |
| amass | v | To collect over time; to gather in large amounts. |
| ambidextrous | adj | Able to use the left hand or the right hand equally well; equally skilled. |
| ambush | n | A sudden attack made from a concealed position. |
| ameliorate | v | To improve; to lessen discomfort. |
| amiable | adj | Agreeable; friendly; lovable. |
| ample | adj | Enough; abundant; sizable; opportune. |
| amplify | v | To increase in size, effect, volume, etc. to expand; to broaden or clarify. |
| anachronism | n | An error with the timeline; something or someone misplaced in time. |
| anathema | n | Solemn curse; a person or something regarded as a curse; something that is polluted; excommunication. |
| anatomy | n | The scientific study of the structure of animals; the dissection and study of the body. |
| ancestry | n | Family descent; inherited properties that are shared among people with a past common family member. |
| anesthetic | n | Something that causes the loss of sensation. |
| anomalous | adj | Abnormal; irregular; unexpected. |
| anomaly | n | An irregularity; something that is out of place. |
| anthology | n | A collection of various pieces of writing, all from different authors. |
| anticipate | v | To act in advance; to prevent; to predict; to realize beforehand. |
| antipathy | adj | Strong aversion; dislike. |
| antique | n | Something from a previous time; something made previously which is now of great worth. |
| apex | n | To top; the summit; the ultimate goal; a climax. |
| apparent | adj | Evident; easily perceived. |
| apposite | adj | Appropriate; fitting; adequate |
| appreciate | v | To be understanding of; to be thankful; to be conscious of. |
| apprehend | v | To arrest a criminal; to perceive. |
| apprise | v | To inform; to give notice to. |
| aptitude | n | Fitness; talent. |
| arable | adj | Land that is fertile; fit for growing crops. |
| arbitrate | v | To act as judge; to preside over. |
| arboreal | adj | Of or related to trees. |
| arboretum | n | A place where different types of trees and shrubs are studied and exhibited; a place where a large variety of woody plants are kept for ornamental purposes. |
| arcane | adj | Mysterious; known only to the initiated; hard to grasp. |
| archaic | adj | Antiquated; out of date; no longer used; of or belonging to the past. |
| arduous | adj | Hard; strenuous; labor-intensive; difficult. |
| arid | adj | Dry; barren; unproductive; forgotten. |
| aromatic | adj | Fragrant; sweet smelling. |
| arrogance | n | Proud superior mannerisms; behavior that is snobbish. |
| ascend | v | To go up; to climb. |
| assail | v | To assault. |
| assent | v | To agree; accept. |
| assort | v | To classify into different sorts; to arrange: to match. |
| assorted | adj | Of various types; matched; of many origins; not of the same variety. |
| assuage | v | To ease or lessen pain; to make less severe. |
| assurance | n | A promise or a pledge; a statement of authenticity; certainty. |
| astonish | v | To astound; to surprise. |
| astringent | n | Something that causes contraction or that shrinks tissue. |
| astronomical | adj | Enormously large; gigantic. |
| atrophy | n | The wasting away of tissue, an organ, or any part of a living organism due to a lack of food. |
| attentive | adj | Alert; listening carefully; at full attention; considerate. |
| atypical | adj | Not normal; out of the ordinary. |
| autocratic | adj | Having absolute unchecked power; like an absolute dictator. |
| auxiliary | adj | Additional; secondary; in a supportive role. |
| avalanche | n | A great mass of falling snow and ice. |
| avert | v | To prevent; to hold back; to avoid or to stymie. |