| Frequenzumformer | frequency changer frequency converter |
| Fremdenzimmer | bed and breakfast |
| Frauenzimmer | broad |
| Fremdenführer | cicerone guide tour guide tourist guide |
| frequentieren | frequent |
| Frequentativum | frequentative |
| Freudenfeuer | bonfire |
| freies Zimmer | vacancy |
| Freiberufler | freelancer |
| Frequenz | frequency |
| Frequenzspektrum | frequency spectrum |
| Frequenzwörterbuch | frequency dictionary |
| Sequenzer | sequencer |
| Frauenorden | sisterhood |
| Frauenverführer | Casanova |
| Frauenmord | femicide |
| Krankenzimmer | sickroom |
| Reformer | reformer |
| gesenkformen | swage |
| kreuzförmig | cruciform cross-shaped |