ignotum per ignotius

== English == === Etymology === From Latin ignōtum per ignōtius, “[to explain] the unknown by the more unknown”. === Phrase === ignotum per ignotius An attempt to explain something obscure in terms of something else which is even more obscure. (logic) A type of fallacious argument in which one attempts to prove something unknown by relying upon an assumption that is also unknown. ==== Synonyms ==== obscurum per obscurius === References === John A. Simpson and Edmund S. C. Weiner, editors (1989), “ignotum per ignotius”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN.