I have never encountered Tohubohu as an English word before, but it is in the OED. It's an archaism. Looks like it was used in the seventeeth through nineteenth centuries.
The word, of course, comes from Hebrew tohu va-bohu (תהו ובהו), translated as "without form and void" in the King James Version of Genesis 1:2. For more on the biblical phrase, see here and here.
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