| Flause | fabrication |
| Flaute | calm lull slack period slackness |
| Clause | clause |
| Klause | hermitage splash dam |
| Fluse | fluff piece of fluff |
| Flachse | tendon |
| Flagge | flag ensign colours standard colors |
| Flame | Fleming flame |
| Flamme | flame |
| Flanke | flank side edge cross |
| Flare | solar flare stellar flare lens flare |
| Flaum | fluff |
| Fläche | surface area |
| Pflaume | plum |
| flau | weak |
| Bläue | blueness |
| Ölauge | goatfucker |
| Glaube | faith belief creed |
| Klaue | claw cloven hoof |
| Klaus | kloyz |