| Radicalwort | primitive |
| Radikaler | radical |
| Radiator | radiator |
| Radikale | radical |
| Radiologe | radiologist |
| Prädikator | predicator |
| Radiant | radian radiant |
| Radiation | adaptive radiation |
| Radicchio | radicchio |
| Radikal | radical |
| radikal | radical |
| Radioapparat | radio receiver |
| Radsport | cycling |
| radial | radial radially |
| radikalisch | radical radically |
| Adiaphora | adiaphora adiaphoron |
| Initialwort | initialism |
| Minimalwert | minimum |
| Pluralwort | plurale tantum |
| Wandelwort | verb |