From PIE *ǵʰu-tó-m (that which is invoked) — originally neuter in gender, becoming masculine only with Christianity.
A superhuman being or spirit worshipped as having power over nature and human affairs; in monotheistic traditions, the creator and ruler of the universe.
From Old English god (a deity, a supreme being), from Proto-Germanic *gudą (a deity), from PIE *ǵʰu-tó-m (that which is invoked or poured to), the perfect passive participle of *ǵʰew- (to pour, to call out, to invoke — specifically to pour libations in religious sacrifice). The reconstructed PIE form *ǵʰu-tó-m means literally that which has been called upon or that to which libations are poured, revealing that the original concept of divinity was not metaphysical abstraction but ritual act: a god is what you pour drink-offerings toward. The root
The word 'god' was grammatically neuter in Proto-Germanic — it had no gender. It only became masculine when Germanic peoples adopted Christianity and needed the word to refer to a specifically male deity. The older neuter form is preserved in the Gothic Bible's 'guþ,' translated by Bishop Wulfila in the 4th century