| Obszönität | obscenity |
| Bonität | credit-worthiness financial standing |
| obstinat | obstinate |
| obszön | obscene obscenely |
| Orthonitrat | orthonitrate |
| Abschnitt | section passage sector period segment coupon |
| Laszivität | lasciviousness |
| Opazität | opacity |
| Absurdität | absurdity |
| Viskosität | viscosity |
| Obstanbau | pomiculture |
| Obsidian | obsidian |
| Obstsalat | fruit salad |
| obsolet | obsolete deprecated |
| Zonalität | zonality |
| Amazonit | amazonite |
| Ozonator | ozonator |
| Ozonid | ozonide |
| Ozonwert | ozone level |
| horizontal | horizontal |