| Friktion | friction |
| Fiktion | fiction |
| Fraktion | parliamentary party faction fraction |
| Diktion | diction |
| Miktion | micturition |
| Erektion | erection |
| Funktion | function map mapping |
| Rektion | case government government |
| Traktion | traction |
| Fritten | french fries |
| frikativ | fricative |
| Frikativ | fricative |
| fristlos | without notice without previous notice |
| Briktius | Bryce |
| Fabrikation | production |
| Trikolon | tricolon |
| fiktional | fictional |
| fiktiv | fictitious fictional |
| Funktions | functional |
| funktions | functional |