| Offroader | off-roader |
| Pfortader | portal vein |
| Offizier | officer commissioned officer mate piece |
| Öffner | opener |
| Bootloader | boot loader |
| Uploader | uploader |
| E-Reader | e-reader |
| Urlader | bootstrap |
| Obergaden | clerestory |
| Oktaeder | octahedron |
| Tetraeder | tetrahedron |
| Opfernder | sacrificer |
| Order | order |
| förder | further |
| oder aber | alternatively |
| Fremder | stranger |
| fürder | hereafter further |
| Offset | offset |
| Söffer | boozer |
| offene | open source |