| anathema | Something or someone that one vehemently dislikes | |
| analogue | A person or thing seen as comparable to another | |
| anachronism | Something that is not in its correct historical or chronological time, especially something from the past that seems out of place in the present | |
| ample | Enough or more than enough; plentiful | |
| amicable | Having a spirit of friendliness; without serious disagreement or rancor | |
| amenable | Willing to agree or to accept something that is wanted or asked for | |
| ameliorate | To make something bad or unsatisfactory better | |
| ambivalence | The state of having mixed feelings or contradictory ideas about something or someone | |
| ambiguity | The quality of being open to more than one interpretation; inexactness | |
| amalgamate | To combine or unite to form one organization or structure | |