That's a good question made more complex by the problem that no one can agree on the number of characters in the Voynich alphabet, whether some are distinct characters, whether they are accented or ligands. Using the most commonly agreed number of characters, then the entropy comes in lower than most languages and certainly lower than any European languages. The text is very repetitive. If it is plaintext of prose then the only known language that comes close is Polynesian.
So those naked women gambolling across the vellum might just be beautiful sun-kissed, long-limbed, raven-haired, bronzed...[going for a lie down now]