| A | B |
|---|
| audible | heard or able to be heard. |
| audience | a group of people who gather together to listen to or watch something |
| audio | of or relating to the sound that is heard on a recording |
| audition | a short performance to show the talents of someone |
| auditorium | a large room or building where people gather to hear a speech or watch a performance |
| antidote | a substance that stops the harmful effects of a poison |
| antisocial | violent or harmful to people |
| antipathy | a strong feeling of dislike |
| antiseptic | a substance that prevents infection in a wound by killing bacteria |
| antibody | a substance produced by the body to fight disease |
