| kostümieren | costume |
| postulieren | postulate posit |
| konsumieren | consume |
| konturieren | outline |
| postieren | position station |
| studieren | study |
| resümieren | sum up |
| kollimieren | collimate |
| optimieren | optimize |
| ästimieren | esteem |
| kastrieren | fix castrate |
| koagulieren | coagulate |
| kontrieren | double |
| koitieren | copulate have sex have sexual intercourse |
| konjugieren | conjugate |
| konstatieren | ascertain note state |
| konstruieren | design make fabricate construct |
| kopulieren | copulate make a splice graft join with a copula |
| korrumpieren | corrupt |
| kotieren | quote admit for quotation list measure |