cerebrate

How to sign: use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments
"I've been thinking all day and getting nowhere";

See also: mull, ponder, mull over, dream up, chew over, muse, think over, think out, meditate, think up, excogitate, ruminate, hatch, speculate, reflect, contemplate, concoct, think of

Similiar / Same: cogitate, think

Within this category: puzzle over, rationalize, think, philosophize, brainstorm, chew over, reason, reason, judge, study, plan, associate, concentrate, give, think about, think, think