| Kategorie | category |
| Katatonie | catatonia |
| kategorisch | categorical |
| Materie | matter |
| Allegorie | allegory |
| Kalorie | calorie |
| Katarerin | Qatari |
| Kathole | papist |
| Katholin | papist |
| Oberkategorie | supercategory |
| Katakombe | catacomb |
| Katalonien | Catalonia |
| Katechese | catechesis |
| Kater | tomcat cat tom hangover |
| Kathode | cathode |
| Katholik | Catholic |
| Skatologie | scatology |
| katenativ | catenative |
| Täterin | perpetrator |
| Atemknie | cypress knee |