| Propen | propene |
| Propin | propyne |
| Propan | propane |
| proben | rehearse |
| proper | proper |
| Tropen | tropics |
| Probe- | tentative |
| probe- | shakedown |
| Propfan | propfan |
| Propylen | propylene |
| Protzen | splurge |
| protzen | show off splurge |
| Probe | rehearsal trial sample |
| Prolet | pleb |
| Prolin | proline |
| Prophet | prophet Prophet |
| Propst | provost |
| Protein | protein |
| Proton | proton |
| Prozent | percent per cent |