| Konfabulation | confabulation |
| Konfiguration | configuration |
| Kongratulation | congratulation |
| Fabulation | fib |
| Koagulation | coagulation |
| Konkatenation | concatenation |
| Konsultation | consultation |
| Konurbation | conurbation |
| Konfirmation | confirmation |
| Konfiskation | confiscation |
| Konformation | conformation |
| Konfrontation | confrontation |
| Konföderation | confederation |
| Konjugation | conjugation |
| Konstellation | constellation |
| Kontamination | amalgam blending |
| Kontemplation | contemplation |
| konfabulieren | confabulate |
| Kopulation | copulation |
| Kollaboration | collaboration |