| fertil | fertile |
| Fertilität | fertility |
| fertig | ready done finished exhausted |
| fertig- | instant |
| Ferkel | piglet |
| Ferrit | ferrite |
| infertil | infertile |
| Tertia | Columbian |
| wertig | significant |
| Reptil | reptile |
| Textil | textile |
| Ventil | valve |
| gentil | gentle |
| Ferge | ferryman |
| Fern | long haul |
| fern | far |
| Ferner | glacier |
| ferner | moreover additionally further furthermore in addition |
| unfertig | crude |
| Ferien | vacation holidays vacations |