think
verb
°to ponder, to go over in one's head.
°To communicate to oneself in one's mind, to try to find a solution to a problem.
noun
°An act of thinking; consideration (of something).
"I'll have a think about that and let you know."
synonyms: cogitate, ponder, reflect, ruminate more» , opine, guess, imagine, reckon, suppose, consider, deem, find, judge, regard