This is what the Strong's Exhaustive Concordance has to say about the Hebrew word used....
consider, expert, instruct, prosper, deal prudently, give skillful, have good success, teach,
A primitive root; to be (causatively, make or act) circumspect and hence, intelligent -- consider, expert, instruct, prosper, (deal) prudent(-ly), (give) skill(-ful), have good success, teach, (have, make to) understand(-ing), wisdom, (be, behave self, consider, make) wise(- ly), guide wittingly.
and Gill's Exposition says this about it.....
a tree to be desired to make one wise; which above all was the most engaging, and was the most prevailing motive to influence her to eat of it, an eager desire of more wisdom and knowledge; though there was nothing she could see in the tree, and the fruit of it, which promised this; only she perceived in her mind, by the discourse she had with the serpent, and by what he had told her, and she believed, that this would be the consequence of eating this fruit, which was very desirable, and she concluded within herself that so it would be: