Brainwork is a term used to describe the mental effort required to SOLVE a problem or think through a situation. It involves activities such as DELIBERATION, COGITATION, solving, and coming up with ideas. DELIBERATION is a 12 letter word meaning careful consideration of a matter, while COGITATION is a 10 letter word meaning deep thought or meditation. SOLVE is a 5 letter word meaning to find an answer to a problem, and IDEA is a 4 letter word meaning a thought or suggestion. Mentaleffort is a 12 letter word meaning the use of one's mind to do work.