| A | B |
| Aberration | Deviating from the right path or usual course of action |
| Abstinence | The giving up of certain pleasures |
| Abstract | Not concrete |
| Acclaim | Loud applause |
| Acquiesce | To give consent by remaining silent |
| Admonish | To warn; To urge strongly |
| Advocate | To support |
| Aesthetic | Showing an appreciation of beauty in nature or art; Artistic |
| Affinity | A natural attraction |
| Aggrandizement | Growth in power |
| Alienate | To estrange |
| Alleviate | To relieve; To diminish |
| Aloof | Apart |
| Altruistic | Thoughtful of the welfare of others |
| Ambiguous | Not clearly defined |
| Ambivalence | Condition of having conflicting attitudes |
| Ameliorate | To improve |
| Analogous | Comparable |
| Animosity | Ill will; Bitter or hostile resentment towards something |
| Anonymity | The condition of being nameless or unknown |
| Antagonism | Hostility; Active opposition |
| Antithesis | Direct opposite |
| Apocryphal | Counterfeit |
| Arduous | Strenuous |
| Articulate | Able to put one's thoughts into words easily and clearly |
| Assauge | To satisfy |
| Atrophy | To waste away |
| Augment | To increase or enlarge |
| Austere | Strict in morals |
| Authoritarian | A person who supports the principle of subjection to authority instead of individual freedom |
| Autonomy | Independence |
| Aversion | Antipathy |
| Belittle | To make something seem less important |
| Bequeath | To pass along |
| Bizarre | Grotesque |
| Blithe | Happy and cheerful |
| Bombastic | High-sounding |
| Buffoon | A clown |
| Cache | A hiding place |
| Cacophony | Discord |
| Cajole | To persuade by pleasant words or false promises |
| Callous | Unfeeling |
| Capitulate | To surrender |
| Capricious | Fickle; Unchangeable |
| Carping | Complaining |
| Catalyst | Someone or something that brings change |
| Catharsis | An emotional purification |
| Caustic | Stinging; Biting |
| Celestial | Divine |
| Censure | To criticize adversely |