| First Lady | First Lady |
| Firstblume | finial |
| First Down | first down |
| First | ridge |
| First-Class- | first class |
| fürstlich | lordly |
| Forstamt | forestry office |
| Forsthaus | forester's house forester's lodge |
| Vorstadt | suburb |
| Worst Case | worst-case |
| forstlich | forestal silvicultural |
| für lau | for free for nothing |
| Fischladen | fishmonger's |
| Füsillade | fusillade |
| Firmgodl | godmother |
| Firmgöd | godfather |
| Firmpate | godfather |
| Firewall | firewall |
| Firlefanz | bells and whistles stupidity |
| Firma | firm company business |