| Ach-Laut | ach-laut |
| Nachlauf | wake |
| Achat | agate |
| Achau | Achau |
| Ablaut | ablaut |
| Anlaut | initial sound |
| Auslaut | final sound |
| Schläue | shrewdness |
| Wohllaut | melody |
| Zahnlaut | dental consonant dental |
| schlau | sly cunning smart clever leery |
| schaut | look |
| Achtling | octuplet |
| Achäa | Achaea |
| Dachlatte | batten lath |
| Dachsbau | sett |
| Mach-Zahl | Mach number |
| ach ja | oh well |
| ach was | duh |
| lachhaft | laughable |