The Proto-Indo-European word *bʰeu(hₓ)-
Word *bʰeu(hₓ)-
Meaning to come into being, to be, to grow
See also Pr.Indo-Iranian: bʰau̯H ‘to become’
Synonyms *bhel-3, bhlē-, *gʰreh₁-, *h₁es-, *ĝerha-, *hₐel-, *hₐeug-, *wredh-, *hₐwokséye/o-

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