| Reff | reef |
| reffen | reef |
| Treff | clubs meeting point |
| Teff | teff |
| Neffe | nephew |
| Betreff | subject |
| Reflex | reflex |
| Reform | reform |
| Treffen | meeting encounter |
| treffen | meet hit affect |
| Treffer | hit |
| Effeff | splendid |
| Effet | spin |
| Ganeff | ganef ganof gonif goniff |
| Reform- | reformist |
| Krefeld | Krefeld |
| Referat | report lecture presentation talk paper project department division unit |
| Referee | referee |
| Refrain | refrain |
| Refugee | refugee |