Russian historian Alexandre Nemirovsky proposed a hypothesis that Classical Black Speech was based on extinct Hurrian language. This idea is controversial but it became popular among Black Speech researchers.

1. Percentage of similarities is surprisingly high for such small corpus
2. Unlike other theories concerning Black Speech, pointed out similarities look legal

1. We don't know for sure if J.R.R. Tolkien was familiar with E.A. Speiser's “Introduction to Hurrian” (1941), the first dedicated book on the subject.
2. There are too little attested words both in Black Speech and Hurrian/Urartian to make any conclusions
3. Nemirovsky cites some words not attested in other sources
4. Half of words are actually Urartian, a related language of the same language family

• Original Russian text of hypothesis (Archive)
• Orkish and the Black Speech at Ardalambion. See “APPENDIX: Was the Black Speech based on Hittite/Hurrian?”.