| Konfrontation | confrontation |
| konfrontativ | confrontational contrastive |
| Konformation | conformation |
| Konnotation | connotation |
| Kondensation | condensation |
| Konsultation | consultation |
| Konurbation | conurbation |
| Konfabulation | confabulation |
| Konfiguration | configuration |
| Konfirmation | confirmation |
| Konfiskation | confiscation |
| Konföderation | confederation |
| Konvokation | convocation |
| Konzentration | concentration |
| konfrontieren | confront |
| Kooptation | co-optation co-option |
| Konkatenation | concatenation |
| Konkretion | concretion |
| Konsekration | dedication |
| Konspiration | conspiracy |