| Kletterei | climbing |
| Klettereisen | crampon |
| Kletterer | climber |
| Klettern | climbing |
| klettern | climb |
| kletternd | scrambling |
| Ketzerei | heresy |
| Kleckserei | daub |
| Klempnerei | plumbing |
| Klette | burdock |
| Klettersteig | iron road iron way via ferrata |
| letztere | latter later |
| letzterer | latter |
| Letter | character letter |
| fettfrei | fat-free |
| Reiterei | cavalry |
| Meuterei | mutiny |
| Kellerei | winery |
| Keilerei | brawl |
| Leckerei | delicacy |