| Kardinaltugend | cardinal virtue |
| Kardinale | cardinal numeral |
| Kardinaldekan | Dean of the College of Cardinals Dean of the Sacred College of Cardinals |
| Kardinalrot | cardinal |
| kardinalrot | cardinal |
| Kardiologin | cardiologist |
| Kartenlegen | cartomancy |
| Kartenlegende | legend |
| Karzinogen | carcinogen |
| karzinogen | carcinogenic |
| Kardinal | cardinal |
| kardinal | cardinal |
| Kardinalat | cardinalate |
| Kardinalität | cardinality |
| Kardinalvikar | Cardinal Vicar |
| Kardinalzahl | cardinal number cardinal numeral |
| Kardiologe | cardiologist |
| Cardinale | cardinal numeral |
| Karambolagen | billiards |
| Kardinalsymptom | cardinal symptom |