adjective

1. of or pertaining to the intellect
2. appealing to the intellect
3. 1. requiring or involving the intellect
   2. inclined toward activities that involve the intellect
4. guided by the intellect rather than by feelings
5. having or showing a high degree of intellect; having superior reasoning powers

Etymology: ME < LL intellectualis

noun

1. a person with intellectual interests or tastes
2. a person engaged in intellectual work
3. a member of the intelligentsia