The Proto-Indo-European word *noibʰos
Word *noibʰos
Meaning holy
See also Proto-Indo-European: *nei- ‘to be excited’
Synonyms *k̂wen(to)-, *dʰēh₁-s(-io-), *sakros

Comments
Mallory J.P. and Adams D. (2006)

Other words that might be of interest
*deiwós ‘god’, *hₐénsus ‘god, spirit’