| 1 | Sanskrit | राधा | prosperity, success; name of the 21st... |
| 2 | Sanskrit | राध् | to succeed, accomplish, perform, be accomplished,... |
| 3 | Proto-Indo-Aryan | HraHdʰ- | — |
| 4 | Proto-Indo-Iranian | HraHdʰ- | — |
| 5 | Proto-Indo-European | Hreh₁dʰ- | to think; to arrange; to succeed, accomplish |
| 6 | Proto-Indo-European | h₂reh₁- | to think, reason; to arrange |
| 7 | Proto-Indo-European | h₂er- | to fit, to fix, to put together |