| konfessionsfrei | nonsectarian |
| Konfessionsfreier | nonsectarian |
| Konfessionsfreiheit | nonsectarianism |
| Konfessionsloser | nonsectarian |
| konfessionslos | nonsectarian |
| Konfession | denomination |
| konfektionieren | accomplish sew |
| koffeinfrei | decaffeinated |
| Konzession | concession admission licence |
| kommissionieren | commission pick |
| Konditionierer | conditioner |
| Konfektionsgröße | size |
| Konfessionslosigkeit | nonsectarianism |
| Konventionen | decorum |
| Konvexlinse | convex lens |
| konditionieren | condition |
| kontextfrei | context-free |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Konfusion | bewilderment |
| Konkussion | concussion |