| Oregano | oregano |
| Oregon | Oregon |
| Organ | organ |
| Ortgang | bargeboard gableboard verge vergeboard |
| Öresund | Oresund |
| Orexin | orexin |
| Bregen | brain |
| Bregenz | Bregenz |
| Regal | shelf rack seigniorage regal |
| Regen | rain Regen |
| regen | move stir |
| Regent | ruler sovereign |
| Regina | Regana Regena Regina |
| Regung | emotion |
| Elegant | snob |
| elegant | elegant refined |
| Eleganz | elegance snazziness |
| Omega | omega |
| Seegang | swell rough seas sea disturbance waves |
| legato | legato |