| Kaustik | caustic |
| Kausativ | causative |
| Austin | Austin |
| Baustil | architectural style building style |
| krustig | crusty |
| Akustik | acoustics |
| Kasuistik | casuistry |
| Mäeutik | maieutics |
| Nautik | nautical science |
| Kausch | cringle |
| Kausche | thimble |
| Kautel | proviso |
| Kaution | bail deposit |
| kausal | causal |
| Aussi | Aussie |
| Aussig | Ústí nad Labem |
| Faustfick | fist-fuck |
| Tausi | grand |
| knausrig | miserly |
| kräuslig | frizzy |