| regellos | licentious |
| reglos | motionless |
| zügellos | unbridled |
| Regeln | control |
| regeln | control manage regulate |
| Regulus | Regulus |
| Regel | rule regulation period |
| Regelung | closed-loop control regulation arrangement |
| regelbar | adjustable |
| Rubbellos | scratch card |
| stiellos | sessile |
| Rebell | rebel |
| Rebellin | rebel |
| Rebellion | rebellion |
| Repeller | repeller |
| kabellos | wireless |
| makellos | immaculate pristine |
| reell | real |
| tadellos | irreproachable |
| ziellos | aimless |