| Aktuarius | actuary |
| Aktualismus | actualism |
| Aktuar | actuary |
| Aquarium | aquarium tank |
| Bakterium | bacterium |
| Akteurin | actress |
| Aktrice | actress |
| Aktualität | topicality |
| Tuaregs | Tuareg |
| Ästuar | estuary |
| Aquarist | aquarist |
| Ossuarium | ossuary |
| Abcdarium | ABC |
| Arius | Arius |
| Darius | Darius |
| Sakmarium | Sakmarian |
| Apiarium | apiary beeyard |
| Askaris | ascaris ascarid |
| Aviarium | aviary |
| Hilarius | Hilary Ellery |