| Koprolalie | coprolalia |
| Koprophilie | coprophilia |
| Koprophagie | coprophagy |
| Kroprologie | scatology |
| Korolle | corolla |
| Kobralilie | pitcher plant |
| Koprolith | coprolite fecaloma coprolith faecalith stercolith stercorolith |
| Horologie | horology |
| Korolla | corolla |
| Kontrolle | inspection control |
| Korollar | corollary |
| Morologie | morology |
| Echolalie | echolalia |
| Glottolalie | glossolalia |
| Glossolalie | glossolalia |
| Formalie | formality |
| Kopflehne | headrest |
| Kopfzeile | header |
| Kopra | copra |
| Kopfball | header |