| Orthonitrat | orthonitrate |
| Tortuosität | tortuosity |
| Orthoptist | orthoptist |
| Obszönität | obscenity |
| Orthoklas | orthoclase |
| orthogonalität | orthogonality |
| Mortalität | mortality |
| Orthoepie | orthoepy |
| Orthofoto | orthophoto |
| Orthognathie | orthognathy orthognathysm |
| orthognath | orthognathic orthognathous |
| orthogonal | orthogonal |
| Honiara | Honiara |
| oxytoniert | oxytonize |
| oxytonirt | oxytonize |
| Bonität | credit-worthiness financial standing |
| Profanität | profanity |
| Fraternität | brotherliness fraternalism brotherhood fraternity |
| Maternität | motherhood |
| Nitrat | nitrate |