| koffeinfrei | decaffeinated |
| kostenfrei | cost-free free of cost |
| Koffein | caffeine |
| gemeinfrei | public domain |
| sorgenfrei | carefree happy-go-lucky untroubled |
| wolkenfrei | cloud-free |
| kontextfrei | context-free |
| keimfrei | sterile |
| Koffer | suitcase |
| Kofferkuli | baggage cart |
| Kofferwort | portmanteau word portmanteau |
| koffeinhaltig | caffeinated |
| Coffein | caffeine |
| Offenheit | candor |
| offene | open source |
| offenbaren | bare disclose reveal |
| offerieren | offer |
| offline | offline |
| Konterfei | portrait |
| Schreinerei | carpentry joinery woodworking cabinetmaking |