| Feuer frei! | fire at will |
| Feuerschein | firelight |
| Feuerstein | flint flintstone ferrocerium |
| feuerfest | fireproof |
| steuerfrei | tax-exempt tax-free taxless |
| fieberfrei | afebrile |
| fehlerfrei | faultless flawless accurate perfect |
| Feuerameise | fire ant |
| Feuerfisch | lionfish |
| Feuerkieke | foot stove |
| Feuerkraft | firepower |
| Feuerprobe | trial by fire |
| Feuerstein- | flinty |
| Feurigkeit | mettle |
| Feuer fangen | catch fire |
| Feuerberg | volcano |
| Feuerbohrer | bow drill |
| Feuereifer | ardor |
| Feuerherd | range origin of fire seat of fire source of fire hot spot |
| Feuerkorb | fire basket |