| Konklave | conclave |
| konkav | concave |
| Enklave | enclave |
| Konkani | Konkani |
| Konserve | preserve |
| Anklage | accusal accusation |
| Exklave | exclave |
| Sklave | slave |
| Oktave | octave octonion Cayley algebra Cayley numbers |
| Ikonoklast | iconoclast |
| Konche | conche apse |
| Konfutse | Confucius |
| Konstanze | Constance |
| Kontrakt | compact contract |
| Könige | Kings |
| konfuse | confuse |
| könnte | might |
| Koncha | apse |
| Konflikt | conflict clash |
| Konfluenz | confluence |