| kontra- | counter- |
| Kontra | con double |
| kontra | against versus |
| konträr | contrarian contrary adverse |
| Kontrakt | compact contract |
| Konrad | Conrad |
| Kontrast | contrast |
| konter- | counter- |
| contra | contra |
| intra- | intra- |
| Kontor | office |
| Kontraalt | contralto |
| Kontranym | contranym |
| Koncha | apse |
| Kontakt | contact |
| Konter | counter-attack |
| Kontext | context |
| Konto | account |
| Kontur | contour outline |
| konkav | concave |