| Fluid | fluid |
| Fluidum | aura |
| Fluke | fluke |
| Fluorid | fluoride |
| Flush | flush |
| Fluß | thread |
| Fluss | river flow fluency flux |
| Fluch | curse malediction |
| Flug | flight |
| Fluor | fluorine fluor albus whites |
| Flur | corridor hallway hall farmland field |
| Fluse | fluff piece of fluff |
| Flut | flood-tide flood wave |
| flugs | quickly |
| Flunke | fluke |
| Fluorit | fluorite |
| flügge | fledged |
| Flucht | flight |
| Fluder | flume |
| Flugbild | flight silhouette |