| Formkasten | flask |
| Hohlkasten | box girder |
| Postkasten | collection box drop box letter box mailbox postbox letterbox mail slot |
| Formalie | formality |
| Formalin | formalin |
| Formen | molding |
| formen | form shape model sculpt sculpture |
| Formfaktor | form factor |
| Formgesenk | swage |
| Fortblasen | puffery |
| fortblasen | blow |
| formieren | deploy |
| fortlaufen | absquatulate |
| Formant | formant |
| Format | shape |
| Formation | formation |
| Formativ | formative |
| Formmangel | lack of form |
| Förster | ranger Forester |
| fortfahren | drive away continue |