- Proto-Hind-Ewropaki ra *pari- ("dorme, dorme de") + *ies- ("gird")
- Proto-Aryaki ra *pari- + *iah- ("gird")
- Farski: pērāhan ("pırên")
- Gilaki: pirhän ("pırên")
- (Zazaki: pirēn) Alfabeyê Ariki
- J. Cheung, Etymological Dictionary of the Iranian Verb. Leiden 2007.
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