| Korpulenz | corpulence |
| korpulent | corpulent portly |
| Opulenz | opulence |
| opulent | opulent |
| Turbulenz | turbulence |
| Virulenz | virulence |
| kraulen | crawl do the crawl |
| Koblenz | Koblenz |
| Kondolenz | condolence |
| Kompetenz | competence |
| Korund | corundum |
| Körnchen | grain |
| koralle | coral |
| Koralle | coral |
| Korduan | cordovan |
| Korken | plug stopper |
| Korolle | corolla |
| Korpus | corpus body base |
| Korpuskel | corpuscle |
| Körbchen | cup calathid head |