"Yet, for the Indo-European-speaking society, we can reconstruct with certainty the word for 'god', deiw-os, and the two-word name of the chief deity of the pantheon, dyeu-pəter- (Latin Iūpiter, Greek Zeus patēr, Sanskrit Dyauṣ pitar, and Luvian Tatis Tiwaz)". The American Heritage Dictionary of the English Language, Fourth Edition. 2000