| Karlsruhe | Karlsruhe |
| Kühltruhe | deep freezer freezer |
| Karbolsäure | carbolic acid |
| Karborund | carborundum |
| Karisch | Carian |
| karisch | Carian |
| Karlstadt | Karlovac |
| Karosse | body |
| Karsee | tarn |
| Karausche | crucian crucian carp |
| Karobube | jack of diamonds |
| Karoshi | karoshi karōshi |
| Karre | cart |
| Karree | rack |
| Kartusche | cartouche |
| Karwoche | Holy Week Passion Week |
| Grabesruhe | deafening silence silence |
| ausruhen | rest |
| Gerbbrühe | ooze |
| Nachtruhe | sleep |