| achteckig | octagonal |
| Achteck | octagon |
| rechteckig | rectangular |
| schleckig | glutton |
| achtarmig | octopod eight-armed |
| achtseitig | octagonal eight-sided octahedral eight-page |
| achtzig | eighty |
| nachteilig | disadvantageous |
| mehreckig | polygonal |
| sechseckig | hexagonal |
| Acheilie | liplessness |
| Achtling | octuplet |
| Wächterin | sentinel |
| achterlich | astern |
| achtsilbig | octasyllabic |
| nachtonig | posttonic |
| Acheilia | acheilia |
| Acheirie | acheiria |
| Achte | eighth |
| achte | eighth |