1) Appealing to brainiacs 2) Brainy 3) French word used in English 4) Intellectual 5) Intellectually appealing 6) Intellectually stimulating 7) Like you, solving this 8) Mind 9) Of the brain 10) Of the intellect 11) Psychological 12) Rational 13) Relating to the brain 14) Requiring intellect 15) Using the intellect 1) Brainy 
• (n.) One of a class of lingual consonants in the East Indian languages. See Lingual, n. • (a.) Of or pertaining to the cerebrum.
of or pertaining of the cerebrum or the brain.
<anatomy> Of or pertaining of the cerebrum or the brain. ... (18 Nov 1997) ... 
(sә-re´brәl) (ser´ә-brәl) pertaining to the cerebrum.
Of the brain
Cer'e·bral adjective [ Latin cerebrum brain; akin to Greek Cer'e·bral noun [ A false translation of the Sanskrit mūrdhanya , lit., head-sounds.] One of a class of lingual consonants in the East Indian languages. See Lingual , noun » Prof. W. D. Whitney calls these letters linguals , and this is their...
Relating to the cerebrum.
Relating to the cerebrum which is the largest part of the brain
Type: Term Pronunciation: ser′ĕ-brăl, se-rē′brăl Definitions: 1. Relating to the cerebrum.
Cerebral: Pertaining to the brain, the cerebrum or the intellect. The word 'cerebral' was borrowed directly from the French 'cérébral' which was derived from 'cerebrum' (Latin for the 'brain').
Relating to the brain.
[adj] - of or relating to the cerebrum or brain 2. [adj] - involving intelligence rather than emotions or instinct
cerebral 1. Of or relating to the brain or cerebrum. 2. Appealing to or requiring the use of the intellect; intellectual rather than emotional.
Complex and begging careful attention and analysis. Frequently also implies that such analysis is difficult.
Pertaining to the brain.
pertaining to the brain
adjective of or relating to the cerebrum or brain; `cerebral hemisphere`; `cerebral activity`
of or pertaining to the cerebrum or the brain. · betraying or characterized by the use of the intellect rather than intuition or instinct: His is a cerebral music that leaves many people cold. · retroflex (def. 2).