- 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)