brainwork

[ breyn-wurk ]
/ ˈbreɪnˌwɜrk /

noun

work or effort consisting principally or largely of mental activity, thought, imagination, etc., as opposed to physical or manual work.
the effort of thought, reasoning, planning, or the like; ordered or directed thinking: Solving problems is a form of brainwork.

Origin of brainwork

First recorded in 1835–45; brain + work
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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