| Konversion | conversion |
| Kontorsion | contortion |
| Konfession | denomination |
| Konvention | convention |
| Konversation | conversation |
| Konvulsion | convulsion |
| Konzession | concession admission licence |
| Inversion | anastrophe |
| Konvertit | convert |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Konfusion | bewilderment |
| Konklusion | conclusion |
| Konkussion | concussion |
| Konzeption | conception |
| konvers | function |
| konversieren | converse make conversation |
| Subversion | subversion |
| Aversion | aversion |
| Version | version |
| Kondensation | condensation |