| Term | Definition |
| Amicable | friendly |
| Amorous | showing love, particularly sexual |
| Amorphous | without definite shape or type |
| Anachronistic | being out of correct chronological order |
| Analgesic | something that reduces pain |
| Analogous | similar to, so that an analogy can be drawn |
| Anarchist | one who wants to eliminate all government |
| Anathema | a cursed, detested person |
| Ancedote | a short, humorous account |
| Anesthesia | loss of sensation |
| Anguish | extreme sadness, torment |
| Animated | lively |
| Annex | to incorporate territory or space; a room attached to a larger room or space |
| Annul | to make void or invalid |
| Anomaly | something that does not fit into the normal order |
| Anonymous | being unknown, unrecognized |
| Antagonism | hostility |
| Antecedent | something that came before |
| Antediluvian | ancient |
| Anthology | a selected collection of writings, songs, etc |
| Antipathy | a strong dislike, repuugnance |
| Antiquated | old, out of date |
| Antiseptic | clean, sterile |
| Antithesis | the absolute opposite |
| Anciety | intense uneasiness |
| Apathetic | lacking conern, emtion |
| Apocryphal | fictitious, false, wrong |
| Appalling | inspiring shock, horror, disgust |
| Appease | to claim, satisfy |
| Appraise | to assess the worth or value of |
| Apprehend | to seize, arrest; to percieve understand, grasp |
| Approbation | praise |
| Appropriate | to take, make use of |
| Aquatic | relating to water |
| Arable | suitable for growing crops |
| Arbiter | one who can resolve a dispute, make a decision |
| Arbitrary | based on factors that appear random |
| Arbitration | the process or act of resolving a dispute |
| Arboreal | of or relating to trees |
| Arcane | obscure, secret, known only by a few |
| Archaic | of or relating to an earlier period in time, outdated |
| Archetypal | the most representative or typical example of something |
| Ardor | extreme vigor, energy, enthusiam |
| Arid | excessively dry |
| Arrogate | to take without justification |
| Artifact | a remaining piece from an extinct culture or place |
| Artisan | a craftsman |
| Ascertain | to percieve, learn |
| ascetic | practicing restraint as a means of self-discipline, usually religious |
| Ascribe | to assign, credit, attribute to |
| Aspersion | a curse, expression of ill-will |
| Aspire | to long for, aim toward |
| Assall | to attack |
| assess | to evaluate |
| Assiduous | hard-working, diligent |
| Assuage | to ease, pacify |