Old Irish bí

← Proto-Celtic *buyeti (inherited)

← Proto-Indo-European *bʰuH- (root)

← Proto-Indo-European *bʰuH- (inherited)

← Old Irish at·tá (mention)

← Old Irish bii (alter)

→ Irish bí (inherited)

→ Irish bí (inherited)

→ Scottish Gaelic bi (inherited)

→ Scottish Gaelic bìth (inherited)

→ Old Armenian կիւ (mention)