Perkwunos

The name of an Indo-European god of thunder or the oak may be reconstructed as *perk^wunos or *perkunos.

Another name for the thunder god contains an onomatopoeic root *tar-, continued in Gaulish Taranis and Hittite Tarhunt.

Hand of god Perkūnas, form of Perkwunos

Derivatives

From IE *perk^ṷu- "oak-tree":

• Lithuanian Perkūnas, Latvian Pērkons, Old Prussian Perkūns, the god of thunder
  • Finnish Perkele, Mordvinic Pur'gine-paz, borrowings from the Baltic languages
• possible cognate Sanskrit Parjanya, the god of rainstorms and thunder
• Thracian Περκων/Περκος, (Perkon/Perkos)

• With suffix -k- dropped via IE *perō(ṷ)nos "thunder, Thunderer", possibly from a connection with *perūn(V) "mountain, rock":
  • Slavic Perun (Old Russian Перунъ, Belarusian Пярун, Polish Piorun, Czech Perun, Serbian Перун, Bulgarian Перун), the god of thunder
  • possibly Albanian Perëndi, the god of thunder and storms
  • possibly Hittite Pirwa, "the god on a horse", which associated with a rock
  • possibly Greek keraunós "thunderbolt"

Perkūnas' wife was named Perkūnija/Perkūnė/Perperuna/Przeginia. Germanic *Þunraz (Þórr) is from a stem *(s)tene- "thunder", but the name *perk^wunos is continued in Fjörgyn, mother of Þórr.

Etymology

*perk^(w)unos is reconstructed on the basis of Perkūnas. Parjanya is no exact cognate, see below.

The labiovelar is reconstructed due to a Centum word for "oak", "coniferous tree", or "mountain", "coniferous mountain forest", *perk^wus. Here also, the labiovelar is non-trivial, and indeed singular in the sequence *-k^wu-, its justification being in Latin quercus "oak", the result of an assimilatory Italo-Celtic sound law changing *p...k^w to *k^w...k^w (compare quinque, Irish cóic vs. Sanskrit pañca "five"; coquo vs. Sanskrit pacati "to cook"). Celtic *Ercunia, if cognate, did not partake in the assimilation, advising towards a cautious reconstruction of *perk^(w)us.

*perk^(w)unos, then, is the god of the *perk^(w)us, comparable to Germanic *Wodanaz being the god of the *wōþuz, by virtue of the same suffix *-no-.

The original meaning of this u-stem *perk^wu- appears to be concept of an oak, a coniferous forest, a mountain forest, or a wooded mountain:

• "oak": Latin quercus, Old High German fereheih "oak", Celtic Hercynia silva. The oak is quite a common motif in myths about Perkūnas. Cognates include Sanskrit parkaṭī "fig tree", the Venetic and Celtiberian ethnonyms Quarquēni and Querquerni, the Ligurian Nymphis Percernibus, Old Norse fjörr "tree", Anglo-Saxon furh (Modern English fir), Old Norse fura, Old High German forha (Modern German Föhre) "pine tree", Old Norse fyri, Old High German forh-ist (Modern German Forst) "pine forest", Old High German Fergunna (the Erzgebirge), Langobardic Fairkuna. Anglo-Saxon firgen "wooded height", Gothic fairguni "mountain".
• A possibly related word *peru-r/n- for "rock" or "mountain" is reconstructed from Hittite peruna, "rock", Sanskrit parvata, "mountain" (Parvati, daughter of Himavant), Thracian per(u), "rock".

The association with oaks can be explained by the frequency with which tall trees are struck by lightning. This is reflected in two beliefs, one being that the Norse god Thor could strike enemies hiding under an oak tree, but not under the smaller beech; the other that oak trees contained a fire within them that lightning could release (or vice versa, that the lightning transferred fire into the tree that explained why wood was effective fuel).

Fittingly, there is a sanctuary to Perun located on a height called Perynь near Novgorod (It is located on the northern shore of Lake Ilmen where Volkhov River starts. Nowadays there is a church and a monastery). In south-western Bulgaria is the Pirin mountain range.

As seen from the cognates above, the name of the thunder god is only to be ascertained in Baltic and Slavic, but mythological connections of the thunderer with oaks, or wooded mountains may be reconstructed to be associated with the Proto-Indo-European word.

Further etymologization was attempted with reference to a verbal root *per- "to strike", in reference to the thunderbolt and the violent nature of a thunder god. Although in principle Parjanya could also be derived from *per-, it cannot be strictly cognate with *perk^(w)unos, since Old Indic j does not reflect PIE *kʷ. A closer relationship of the verbal root to the theonym is not demonstrable, because the *-k^wu- extension is not otherwise attested as an Indo-European suffix, and because of the semantic distance between "slaying" and "tree" or "mountain".

According to Julius Pokorny (IEW), Russian Perunъ "thunder god" and perun "thunderbolt" which likewise lack the velar element are indeed influenced by the root discussed, the activity of "striking down" being associated with the Balto-Slavic theonym by popular etymology.

See also

• Parjanya
• Donar Oak
• Indra
• Thunderstone