| Protein | protein |
| Proletin | Philistine |
| Propin | propyne |
| Protzen | splurge |
| protzen | show off splurge |
| protzig | garish cocky |
| prötteln | fettle |
| Prolin | proline |
| Propen | propene |
| Protegé | protected |
| Proteom | proteome |
| Protest | protest |
| Proton | proton |
| proben | rehearse |
| prosten | toast |
| Rotwein | red wine |
| Röteln | rubella |
| röten | redden make red become red turn red |
| Poteen | poteen |
| Probe- | tentative |
| probe- | shakedown |