Question

such estates go all to one person, and are in effect entailed and unalienable. source: an inquiry into the nature and causes of the wealth of nations in the sentence above, unalienable has the same or almost the same meaning as: unauthorized unfathomable nonflammable nontransferable

Explanation:

"Unalienable" means something that cannot be transferred or given away. "Nontransferable" has a similar meaning. "Unauthorized" means not having permission. "Unfathomable" means not able to be understood. "Nonflammable" means not able to catch fire.

Answer:

nontransferable