| Flusswasser | river water |
| Süßwasser | fresh water freshwater soft water |
| Heißwasser | hot water |
| Feuerwasser | firewater |
| Flussaue | floodplain |
| Flussbarsch | European perch |
| Flussinsel | islet |
| Flusshafen | river port |
| Flusssäure | hydrofluoric acid |
| Flussufer | river bank riverside |
| Fußballer | footballer |
| Fuß fassen | gain a foothold get a foothold establish oneself settle down break into the market gain access to the market |
| Fußfessel | shackle |
| Fußgänger | pedestrian walker |
| Eiswasser | ice water |
| Kokoswasser | coconut water |
| Altwasser | oxbow lake |
| Blumenwasser | flower water |
| Laufwasser | run-of-the-river |
| Nutzwasser | gray water |