| regelkonform | by-the-book regular |
| Regelkonformität | compliance |
| Regenmoor | bogland |
| Regenmoore | raised bog |
| Regenwurm | earthworm worm |
| Gegenkonto | contra |
| konform | compliant conformable |
| Wellenform | waveform |
| Nebenform | variation variant by-form variety |
| Regeln | control |
| regeln | control manage regulate |
| Regenrohr | drainpipe |
| Regensturm | rainstorm |
| regellos | licentious |
| Regelkreis | closed loop control loop |
| Regelung | closed-loop control regulation arrangement |
| Regelwerk | legal framework |
| Regenfall | rainfall |
| Regenmonat | Pluviôse |
| Regenschirm | umbrella brolly |