In his article “The Finnic ‘secondary e-stems’ and Proto-Uralic vocalism”, published in the 2015 issue of Journal de la Société Finno-ougrienne, Ante Aikio presents a new set of related Uralic items involving Mari:
[Proto-Uralic] *woja/i ‘wild (animal)’ || MariW wojǝr | Komi vej | KhVVj wajǝɣ (< PKh *wājǝɣ) | MsSo ūj (< PMs *ūj) (UEW: 553). — The Mari word has not been previously been included in this cognate set.
I had formerly noted down MariW βojə̑r, drawn from Tscheremissisches Wörterbuch, in my big collection of unetymologized Mari words, so now with Aikio’s observation I must strike it from the list. What is interesting, however, is that the word is apparently attested in literary Meadow Mari, as well, but under the form вар ‘wild, running wild (after confinement)’. If this is the same word, then the originally two-syllable word has undergone contraction, producing an initial-syllable /a/, not something one generally expects from inherited Uralic material.
I know from Oleg Sergeev’s description that Zemljanitsky’s dictionary, compiled in the 1870s, has воеръ ‘дикий’. Unfortunately, Zemljanitsky’s dictionary contains words drawn from both Hill Mari and Meadow Mari forms, and Sergeev fails to make clear if this particular item was accompanied by any indication as to its origin (as some entries in the dictionary do specify Hill or Meadow Mari). Thus, it is presently impossible to know whether an uncontracted MariE βojə̑r did exist until recently, without going through the challenging process of examining the original manuscript in situ. It is extremely urgent that the Mari manuscript dictionaries in Russian state collections be digitized.
(For information on Zemljanitsky’s dictionary and the presence of this item in it, see O. A. Sergeev’s article “Рукописный словарь марийского языка Земляницкого” in Советское финно-угроведенеие XXIV No. 4 (1988), pp. 292–295).