| Flugverbotszone | air exclusion zone no-flight zone no-fly area no-fly zone |
| Flugverbot | flying ban |
| Flugpersonal | aircrew |
| Fluglotse | air traffic controller |
| Feuerbohne | runner bean |
| Flugpetrol | jet fuel |
| Flugroute | airway |
| Flüsterpost | Chinese whispers |
| Flüstertüte | megaphone |
| flügger Vogel | fledgling |
| Flugboot | seaplane |
| Flugente | Muscovy Duck |
| Flugverkehr | air traffic |
| Fluoreszenz | fluorescence |
| Flügelbutt | megrim whiff |
| Flügelhorn | bugle bugle horn cornet flugelhorn |
| Zugverbindung | rail connection |
| Blutversorgung | blood supply |
| Subversion | subversion |
| Univerbation | univerbation |