| Flugasche | fly ash |
| Flasche | bottle flask loser |
| Flugscham | flight shame flying shame |
| Flugschau | airshow |
| Flugschein | pilot's licence air ticket flight ticket |
| Flüsschen | rivulet creek stream |
| flutschen | slide |
| Blutwäsche | hemodialysis |
| Falasche | falasha |
| Lasche | flap tongue of a shoe rail splice butt strap fishplate splice bar tab |
| Lusche | deuce loser |
| Fläche | surface area |
| Flughahn | flying gurnard |
| Flughuhn | sandgrouse |
| Flugroute | airway |
| Flush | flush |
| Flussaue | floodplain |
| Flügelschuhe | talaria |
| Pflugschar | plowshare |
| flügge | fledged |