- originally probably divine partner (wife) of Perun
; probably the name formed by reduplication core “per-“, however it could be also personalization (result) of activity of Perun - „flinging rock" (per-perun-a?) = rain - analog. Ind. Parjanya „(secondarily) cloud, rain" - surname of Indra. Perperuna is the name behaved as designation of participant of ceremony (noted in SouthSlav. folklore) of summoning of rain, called also dodola, dudula (compare to: Lith. Perkunas
- Dundúlis, Latt. Dundusélis and Gr. Dodona
); if we identify perperuna-dodola with beregynja(*perkynja), we deal with team of names - teonyms embracing with significative range occurrence of worship of fecundity: Mokoš
(Mather Earth) - Perkynia / Pergynja(„Holy Forest - Oak wood" / „Mountain" - on the ground of analogy Ind. also: „Cloud, Rain") - Perperuna (Perun's partner, on the ground of analogy Hett. also: „Rock") compactly related with „masculine" worship Thunderlord - Perun. Hipostasy of goddess was probably a viper (snake) guardian of house - žmija cuvakuca, žmija kucarica (SouthSlav.).