| kongenital | congenital |
| kongenial | congenial |
| Konvexität | convexity |
| konnatal | connatal |
| genital | genital |
| Konkavität | concavity |
| Konvent | convent |
| Konventikel | conventicle |
| kontinental | continental |
| Kondensat | condensate |
| Konizität | conicity |
| Kontinuität | continuity |
| Konzentrat | concentrate |
| konvenient | convenient |
| konvivial | convivial |
| tangential | tangential |
| Fotogenität | photogenicity |
| Genitale | genital |
| Homogenität | homogeneity |
| genial | brilliant ingenious |