in·tel·lec·tu·al 
(ĭn′tl-ĕkch-əl)
(ĭn′tl-ĕkch-əl)adj.
1.
a. Of or relating to the intellect.
b. Rational rather than emotional: an intellectual decision.
2. Appealing to or engaging the intellect: an intellectual book; an intellectual problem.
3.
a. Having or showing intellect, especially to a high degree. See Synonyms at intelligent.
b. Given to activities or pursuits that require exercise of the intellect.
n.
An intellectual person.
[Middle English, from Old French intellectuel, from Late Latin intellēctuālis, from Latin intellēctus, intellect; see INTELLECT.]
in′tel·lec′tu·ali·ty (-ălĭ-tē) n.
in′tel·lectu·al·ly adv.
in′tel·lectu·al·ness n.