| konzeptionell | conceptual |
| konventionell | conventional |
| Konzeption | conception |
| Konventionen | decorum |
| konzeptuell | conceptual |
| unkonventionell | unconventional |
| Konventikel | conventicle |
| Konzertina | concertina |
| Konditional | conditional conditional mood |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Konvention | convention |
| Konzession | concession admission licence |
| konstitutionell | constitutional |
| konzertieren | give a concert concert |
| konzertiert | concerted |
| funktionell | functional |
| generationell | generational |
| sensationell | sensational |
| Konditionalis | conditional |
| Konduktion | conduction |