| kontrollieren | check inspect |
| kontrolliert | controlled certified checked |
| Kontrollen | control |
| Kontrolleurin | ticket inspector |
| kontrieren | double |
| kontrollierbar | controllable |
| Kontroller | controller |
| kondolieren | condole |
| konfrontieren | confront |
| kontrahieren | contract |
| kontrastieren | contrast |
| Kontrollelement | control |
| Kontrolleur | ticket inspector |
| Kontrollliste | checklist |
| kongruieren | agree |
| Kontrolle | inspection control |
| Kontrollfreak | control freak |
| Kontrollturm | control tower |
| konfabulieren | confabulate |
| konnotieren | connote |