| kollimieren | collimate |
| kollidieren | collide clash conflict |
| kollabieren | collapse |
| kolonisieren | colonise |
| kolorieren | color colorize colour |
| collagieren | collage |
| vollieren | volley |
| sublimieren | sublimate sublime |
| komprimieren | compress |
| optimieren | optimize |
| kostümieren | costume |
| konsumieren | consume |
| kalzinieren | calcine |
| Voltigieren | vaulting equestrian vaulting |
| koalieren | form a coalition |
| koitieren | copulate have sex have sexual intercourse |
| kombinieren | combine |
| kompilieren | compile |
| komplizieren | complicate |
| konfligieren | conflict#Verb |