| A | B |
| altercation | nosiy dispute |
| apex | highest point; summit; top |
| aperture | an opening; a hole |
| amalgam | a mixture of different elements |
| apparition | unusual or unexpected sight |
| ambrosial | delicious, fragrant, divine |
| aborigine | an original inhabitant |
| ambulatory | walking or moving; alterable |
| androgynous | having both male and female characteristics |
| amphibious | able to function both on land and water |