| Operette | operetta |
| Operator | operator administrator |
| operativ | surgical operative operational strategic |
| Oberende | head |
| Kürette | curette |
| Bürette | buret burette |
| Genette | genet |
| Merlette | martlet |
| Pfette | purlin beam |
| Omelett | omelette omelet |
| Palette | palette range pallet |
| Pipette | pipette |
| Renette | Rennet |
| Vedette | star |
| Sprotte | sprat |
| Oper | opera |
| Operation | surgery operation |
| operabel | operable |
| operieren | operate |
| Opperment | orpiment |