| flugunfähig | flightless incapable of flying not airworthy |
| flugfähig | airworthy |
| Flugunfall | aviation accident |
| unfähig | incapable incompetent unable |
| saugfähig | absorbent |
| Flugfäden | gossamer |
| Flughahn | flying gurnard |
| Flughündin | megabat |
| flugtüchtig | airworthy |
| Flugbahn | trajectory |
| Flugsteig | gate gatehouse |
| fluffig | fluffy |
| flügellahm | broken-winged lame dejected weary |
| Fügung | providence |
| zahlungsunfähig | insolvent |
| fünfzig | fifty |
| zukünftig | in the future future from here on hereafter next time prospective |
| augenfällig | obvious |
| salonfähig | socially acceptable |
| filterfähig | filterable |