The word "Jeyakumar" does not have a widely known etymology as it is a proper name. Proper names often do not have specific origins or meanings but are given to individuals by their parents or families based on personal or cultural preferences. "Jeyakumar" appears to be of Tamil origin and is a combination of two Tamil words: "Jeya", meaning victory, and "Kumar", meaning prince or son. Thus, "Jeyakumar" could be interpreted as "victorious prince" or "son of victory" in Tamil.