Voynichese is a numeric cipher?

[eggyk]

Second, let's look at dchdy - two letters d. This is very similar to terra. Therefore, d = r, which means that ch and y should be equal to e and a. It turns out to be a literal translation.

dchdy with d=r, ch=e, y=a is:    "rera", not "terra"

i-g-e-r-e - it sounds like the word "inrigat" (to water), but we don't have t, a, n and the second i. Is it a shortened version of the word inrigo?

"igere" does not sound like "inrigat" or "inrigo" in any meaningful sense. "igere" also sounds like "belligerence" without the b, an e, and the l's. 

is-n-e/a-s - this is reminiscent of the word ventis (winds), but we are missing one letter.

"isnes" or "isnas" is not reminiscent of "ventis". Even with the v it's a really big stretch.

Has this thread become an AI driven theory thread?