| altkatholisch | Old Catholic |
| Altkatholik | Roman Catholic |
| Altkatholikin | Roman Catholic |
| Altäthiopisch | Ge'ez |
| katholisch | catholic Catholic |
| alkoholisch | alcoholic |
| Alt-Katholik | Roman Catholic |
| Alt-Katholikin | Roman Catholic |
| Altkatalanisch | Old Catalan |
| altväterisch | old-fashioned |
| altväterlich | old-fashioned |
| Altlateinisch | Archaic Latin Early Latin Old Latin |
| Altsächsisch | Old Saxon Old Low German |
| altsächsisch | Old Low German Old Saxon |
| alkalisch | alkaline |
| aleatorisch | aleatory aleatoric |
| Altarmenisch | Old Armenian |
| Altkoreanisch | Old Korean |
| Altägyptisch | Old Egyptian |
| altaisch | Altaic |
| Altaisch | Altay |