| Ausbau | extension removal |
| ausbauen | remove extend improve |
| Aufbau | assembly buildup superstructure construction |
| Auslauf | spout |
| aussäen | seed |
| Ausbaustufe | stage of extension |
| Auslaut | final sound |
| Rapsbau | rape culture |
| Raubbau | overexploitation |
| Abbau | dismantling mining reduction decomposition |
| Altbau | old building |
| Anbau | cultivation extension annex outbuilding |
| Umbau | alteration conversion altered section reorganization |
| Aushub | excavation coving |
| Auslass | outlet |
| Auslaut- | final |
| Aussaat | seed sowing |
| Aussatz | leprosy |
| Aussi | Aussie |
| Aussig | Ústí nad Labem |