| Klassiker | classic |
| Klassik | classical music classical |
| Kassiber | note message secret |
| Kassier | cashier |
| Klassist | classist |
| Klausner | anchorite hermit |
| Klasse | class |
| klasse | great awesome |
| Klassem | classeme |
| Klavier | piano |
| klassieren | classify |
| klassisch | classical classic |
| Pläsier | pleasure delight |
| Kasside | qasida |
| Kassierer | cashier |
| Kassler | Kassler |
| Kürassier | cuirassier |
| Massaker | massacre |
| Kliniker | clinician |
| Kleriker | clergyman |