Probably a Hurrian word of an ultimate Indo-European (Mitanni-Aryan) origin.
The Sumerian correspondence suggests a meaning like “to live” or “to lie down, to pasture” for baTāmu, for which no etymological support could be found.
No etymology can be suggested.
Cf. Hebr. bad 'oracle priest'.
No etymology can be suggested.
Following Brockelmann's hypothesis (Brockelmann 1939, 666; adopted in CAD B 28, Abraham-Sokoloff 2011, 27), Akk. bagani is borrowed from Aramaic. The Akk. form can be tentatively normalized as baganē, st. constr. pl. of *bagn-, with the a-insertion.
No definitive etymology can be suggested.