 The Sanskrit "deva-" derives from Indo-Iranian "*daiv-" which in turn descends from the Proto-Indo-European word, "*deiwo-", originally an adjective meaning "celestial" or "shining", which is a (not synchronic Sanskrit) vrddhi derivative from the root "*diw" meaning "to shine", especially as the day-lit sky.The feminine form of "*deiwos" is "*deiwih2", which descends into Indic languages as "devi", in that context meaning "female deity".Also deriving from "*deiwos", and thus cognates of "deva", are "Zeys/"Ζεύς"" - "Dias/"Δίας"", the Greek father of the gods, Lithuanian Dievas (Latvian Dievs, Prussian Deiwas), Germanic Tiwaz (seen in English ""Tue"sday") and the related Old Norse Tivar (gods), and Latin "deus" "god" and "divus" "divine", from which the English words "divine", "deity", French "dieu", Portuguese "deus", Spanish "dios" and Italian "dio" are derived.