| Kondolenz | condolence |
| Kondolenzbuch | book of condolence book of condolences |
| Indolenz | idleness |
| Kondiment | condiment |
| Konferenz | conference |
| Konfidenz | confidence trust |
| Konfluenz | confluence |
| Kongolese | Congolese |
| Konsole | console |
| indolent | indolent |
| Somnolenz | somnolence |
| Insolenz | boldness |
| Korpulenz | corpulence |
| Koblenz | Koblenz |
| Kondylom | genital wart |
| Kondyloma | genital wart |
| Kontrollen | control |
| Konvent | convent |
| Können | competence ability |
| können | can be able to may be allowed to know |