| Ku-Klux-Klan | Ku Klux Klan |
| Konklusion | conclusion |
| konkludieren | conclude |
| Kulmerland | Kulmerland |
| Kulturland | cultivable cultivated land civilized country culturally rich |
| EU-Kommissar | EU commissioner |
| Exklusion | exclusion |
| Klunker | rock |
| Klümpchen | nub nugget |
| exkludieren | marginalize exclude |
| unklug | imprudent |
| Inklusion | inclusion |
| Klumpen | lump nugget |
| klumpen | lump |
| Klüngel | clique crowd nepotistic network old boys' network |
| Okklusion | occlusion |
| Parklücke | parking space |
| inkludieren | include |
| konkludent | conclusive implied |
| okklusal | occlusal |