A0029500 (ăb-stro͞os′, əb-)adj. Difficult to understand; recondite: The students avoided the professor's abstruse lectures.[Latin abstrūsus, past participle of abstrūdere, to hide : abs-, ab-, away; see ab-1 + trūdere, to push; see treud- in Indo-European roots.]ab·struse′ly adv.ab·struse′ness n.Thesaurus
Adv.
1.
abstrusely - in a manner difficult to understand; "the professor's abstrusely reasoned theories were wasted on his students"