brainish

adjective6

1. •
   Cerebral; intellectual rather than physical or emotional.

   • Will ye still pluck our christian belief from the right hand of God, the eternal Father, and send it to a box of your brainish devising ? — 1849
2. •
   Intellectual; highly intelligent.

   • I think we shall win. Pig 22, who is the first pusher for those who wish to abolish forks, is a highly lunatised and brainish wug. — 1959
3. •
   Brain-like.
4. •
   Neurological; concerning the brain and nervous system.
5. •
   (no longer used) hot-headed; furious

   • And, in this brainish apprehension, kills / The unseen good old man. — 1599
6. •
   (no longer used) Purely the work of the imagination, without serious meaning.

   • It is a folly–nothing, a mere thought, A brainish fancy. — 1836