We don't have synonyms for borean yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are boreal, Korean and boreas.
(n) :
Hypothetical linguistic macrofamily that encompasses almost all language families worldwide except those native to sub-Saharan Africa, New Guinea, Australia, and the Andaman Islands.
(n) :
Hypothetical linguistic macrofamily that encompasses almost all language families worldwide except those native to sub-Saharan Africa, New Guinea, Australia, and the Andaman Islands.