EtymologyÞunraz is the reconstructed Proto-Germanic theonym meaning "thunder", from which all Germanic forms of the god's name descend. The name derives from the same root as the English word "thunder" and its Germanic cognates. Þunraz is the ancestor of Old Norse Þórr, Old English Þunor, Old High German Donar, and other continental Germanic variants. As a reconstructed form, Þunraz appears in linguistic studies rather than historical records, but it provides the foundation for understanding the development of the thunder god's name across Germanic languages.Cultural SignificanceIn the reconstructed Proto-Germanic pantheon, Þunraz was the god of thunder, storms, and fertility—a figure who wielded a hammer (later Mjölnir) and commanded the forces of weather. His cult was widespread among early Germanic tribes before the Viking Age, as evidenced by votive inscriptions and place names. The name explains the correspondence between Norse Thor, Anglo-Saxon Thunor, and Old High German Donar, all pointing to a shared Germanic predecessor. According to the online encyclopedia Wikipedia (n.d.), narrative sources describe Thor (from Þórr) as "a hammer-wielding god associated with thunder, storms, strength, protection, fertility, and farmers." This characterization likely mirrors the attributes of Þunraz from earlier traditions.Linguistic LegacyThe reconstructed *Þunraz is spelled with an asterisk by convention to indicate it is not directly attested but inferred by comparative linguistics. Its initial consonant /θ/ (an unvoiced thorn) underwent sound shifts in daughter languages: Old Norse retained þ, Old English used þ for /θ/, while Old High German experienced the Second Sound Shift, turning */θ/ into /d/ in Donar. The vowel and nasal also vary: the Proto-Germanic sequence *-unraz likely became *-unar- after loss of the nasal in some contexts, giving Old English Þunor versus Old Norse Þórr (which lost the *-nr- cluster). These developments allowed modern scholars to reconstruct a form that explains all later variants consistently.Related NamesThe reconstructed name Þunraz directly stands behind the theonyms Thor (used in Swedish and English), Donar (German), Þórr (Icelandic/Óðinn context), and Tor (Swedish simplified form). In non‑mythological usage, the name also appears in personal names, such as the Norse Þór (Þór). All these forms are ultimate reflexes of *Þunraz.Key factsMeaning: ThunderOrigin: Proto-GermanicType: Theonym (god's name)Usage regions: Germanic-speaking Europe (reconstructed)