| Term | Definition |
| amazon | a masculine woman |
| ambidextrous | equally skillful with either hand |
| ambient | surrounding |
| ambiguous | unclear |
| ambivalence | conflicting feelings toward something or someone |
| ambrosial | pleasing to the taste or smell |
| ambulatory | moving about |
| ambuscade | hidden or secret attack |
| ameliorate | to improve |
| amenable | responsive |
| amend | to change |
| amenities | courtesies |
| amiable | friendly |
| amicable | agreeable |
| amiss | wrong |
| amity | friendship |
| amnesty | official pardon for an offense |
| amoral | lacking a sense of right and wrong |
| amorous | loving |
| amorphous | shapeless |