| Apostatin | apostate |
| Apostelin | apostle |
| Apostasie | apostasy |
| Apostat | apostate |
| Aerostatik | aerostatics |
| Myostatin | myostatin |
| Astatin | astatine |
| apostatisch | apostate |
| Postbotin | letter carrier |
| Aostatal | Aosta Valley |
| Nystatin | nystatin |
| Asiatin | Asian Oriental |
| Apophänie | apophenia |
| Apostille | apostille |
| Apostolat | apostolate |
| apoptogen | apoptogenic |
| Aporetik | aporetic |
| Apostel | apostle |
| Apostroph | apostrophe |
| Napolitain | Neapolitan |