| konkret | concrete |
| Konkretum | concrete noun |
| Konkretion | concretion |
| unkonkret | woolly |
| Konche | conche apse |
| Konfekt | candy |
| Konkrement | calculus |
| Kontrakt | compact contract |
| Konvent | convent |
| Könige | Kings |
| Können | competence ability |
| können | can be able to may be allowed to know |
| könnte | might |
| könnten | might |
| Kongress | congress convention |
| Konkani | Konkani |
| Konkordat | concordat |
| Konkurrent | competitor |
| Konkurs | bankruptcy |
| Konnex | connex |