We don't have synonyms for babian yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are banian, Fabian and sabian.
(n) :
Obsolete form of baboon. [An Old World monkey of the genus Papio, having dog-like muzzles and large canine teeth, cheek pouches, a short tail, and naked callosities on the buttocks. [from 13th c.]]
(n) :
Obsolete form of baboon. [An Old World monkey of the genus Papio, having dog-like muzzles and large canine teeth, cheek pouches, a short tail, and naked callosities on the buttocks. [from 13th c.]]