| Achtermast | mizzenmast |
| Achterbahn | rollercoaster roller coaster |
| achteraus | abaft |
| Hintermast | mizzenmast |
| Dachterrasse | terrace |
| Echternach | Echternach |
| achterlich | astern |
| Achromat | achromat |
| Achsenmacht | Axis Powers |
| Achter | eight eighth |
| achter | aft |
| Achterdeck | afterdeck quarterdeck |
| Nachtfrost | night frost |
| Sachverhalt | circumstance situation |
| achtarmig | octopod eight-armed |
| achtens | eighthly |
| achter- | rear |
| achtern | abaft aft astern backward backwards rearward |
| achtmal | eight times |
| Echter Dost | oregano |