| kontrahieren | contract |
| kontrieren | double |
| kontrastieren | contrast |
| kongruieren | agree |
| konstatieren | ascertain note state |
| konstruieren | design make fabricate construct |
| kontaktieren | contact |
| konterkarieren | foil go against thwart |
| kontrollieren | check inspect |
| konturieren | outline |
| Abstrahieren | stylization |
| abstrahieren | abstract |
| attrahieren | attract |
| extrahieren | extract |
| porträtieren | portrait portray |
| protrahieren | protract |
| subtrahieren | subtract |
| konnektieren | bind |
| Kontrahent | opponent rival counterparty |
| Kontrahentin | opponent rival counterparty |