| Freifläche | open area open space |
| Kreisfläche | disk |
| Rebfläche | vineyard |
| frei machen | set free |
| freimachen | stamp to postpone |
| Freikirche | free church |
| freilich | admittedly certainly of course sure |
| Dreiflächner | trihedron |
| reiflich | mature |
| dreifach | triple threefold |
| Grenzfläche | interface |
| Grünfläche | green lawn |
| Oberfläche | surface surface area |
| Tragfläche | airfoil wing aerofoil foil hydrofoil |
| Fellache | fellah |
| Freigabe | clearance |
| Freilauf- | freewheeling |
| Freimarke | postage stamp stamp |
| Frechdachs | rascal |
| Freifrau | baroness |