| Antwoord | Aantal letters |
|---|---|
| ORGELSTEM | 9 letters |
| ORGELWOLF | 9 letters |
| ORIFICIUM | 9 letters |
| ORIFLAMME | 9 letters |
| ORIGINAIR | 9 letters |
| ORIGINEEL | 9 letters |
| ORIONIDEN | 9 letters |
| ORKESTBAK | 9 letters |
| ORKESTLID | 9 letters |
| OROGENESE | 9 letters |
| OROGNOSIE | 9 letters |
| OROGRAFIE | 9 letters |
| ORPINGTON | 9 letters |
| ORTHODONT | 9 letters |
| ORTHOGOON | 9 letters |
| ORTHOPEED | 9 letters |
| ORTHOPNOE | 9 letters |
| ORTOLANAN | 9 letters |
| ORZECHOWA | 9 letters |
| OSCULEREN | 9 letters |
| OSLUNATUM | 9 letters |
| OSMOLOGIE | 9 letters |
| OSMONDIET | 9 letters |
| OSNABRUCK | 9 letters |
| OSSEBAARD | 9 letters |
| OSSENHAAS | 9 letters |
| OSSENLEER | 9 letters |
| OSSENSTAL | 9 letters |
| OSSENTONG | 9 letters |
| OSSUARIUM | 9 letters |
| OSTENSIEF | 9 letters |
| OSTEOLOOG | 9 letters |
| OSTEOLYSE | 9 letters |
| OSTEOPAAT | 9 letters |
| OSTERHAUS | 9 letters |
| OSTRACIET | 9 letters |
| OSTRAGAAL | 9 letters |
| OTOGRAFIE | 9 letters |
| OTORHAGIE | 9 letters |
| OTOSCOPIE | 9 letters |
| OTTERBONT | 9 letters |
| OTTERHOND | 9 letters |
| OTTOMANEN | 9 letters |
| OUDBAKKEN | 9 letters |
| OUDDOCENT | 9 letters |
| OUDEGARDE | 9 letters |
| OUDELANDE | 9 letters |
| OUDERHUIS | 9 letters |
| OUDERKERK | 9 letters |
| OUDERLING | 9 letters |