| Kontemplation | contemplation |
| kontemplativ | contemplative |
| Konstellation | constellation |
| Kontamination | amalgam blending |
| Kondensation | condensation |
| Konsekration | dedication |
| Konfabulation | confabulation |
| Konsumption | merger consumption |
| Konversation | conversation |
| Konzentration | concentration |
| Konzeption | conception |
| Interpolation | interpolation |
| Korrelation | correlation association |
| Kommemoration | commemoration |
| Konkatenation | concatenation |
| Konspiration | conspiracy |
| Konsultation | consultation |
| Konsumtion | consumption |
| Kontrazeption | contraception |
| Konurbation | conurbation |