| anachronism | something or someone misplaced in time |
| analogous | comparable |
| anarchy | absence of governing body |
| anomalous | abnormal; irregular |
| antipathy | aversion; dislike |
| apathy | lack of caring; indifference |
| appease | pacify or soothe; relieve |
| apprise | inform |
| approbation | approval |
| appropriate | acquire; take possession of for one's own use |
| arduous | hard; strenuous |
| artless | without guile; open and honest |
| ascetic | practicing self-denil; austere |
| assiduous | diligent |
| assuage | ease or lessen (pain); satisfy (hunger); soothe (anger) |