recondite\REK-uhn-dyt\ , adjective:
1.Difficult to understand; abstruse.
2.Concerned with obscure subject matter.
He is a poet's poet, sometimes recondite and always deeply aware of the formal tradition of poetry.
Recondite is from Latin reconditus, past participle of recondere, "to store back," i.e., "out of the way," hence "to hide"; itself from re-, "back, again" + condere, "to put away, to store." Thus, recondite knowledge is "hidden" (because of obscurity or difficulty) from the understanding of the average person.