Where does “रिरेच” come from?

रिरेच (Sanskrit) comes from Proto-Indo-European lelóykʷe, from Proto-Indo-European leykʷ- — to leave.

Ancestry of “रिरेच”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanlelóykʷeto be missing, to be gone
2Proto-Indo-Europeanleykʷ-to leave
Every word from Proto-Indo-European leykʷ- →Every word from Proto-Indo-European lelóykʷe →