| autonom | autonomous self-governed |
| Autonomie | autonomy |
| Autonomist | autonomist |
| Autosom | autosome |
| Autodrom | motor-racing circuit dodgems track bumper car dodgem |
| Autonomistin | autonomist |
| Autozoom | autozoom |
| autogam | autogamous |
| Antonym | antonym |
| Agronom | agronomist |
| Astronom | astronomer |
| auto- | self- auto- |
| Auto | car motor car auto order resolution writ |
| Autobombe | car bomb |
| Autobus | bus coach motorbus |
| Autocar | bus |
| Autochrom | autochrome |
| Autocue | autocue |
| Autokino | drive-in drive-in cinema drive-in theater |
| Automat | vending machine |