mastermind

[mas-ter-mahynd, mah-ster-]
verb (used with object)
1.
to plan and direct (a usually complex project or activity), especially skillfully: Two colonels had masterminded the revolt.
noun
2.
a person who originates or is primarily responsible for the execution of a particular idea, project, or the like: the masterminds of company policy.

Origin:
1710–20; master + mind

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World English Dictionary
mastermind (ˈmɑːstəˌmaɪnd)
 
vb
1.  (tr) to plan and direct (a complex undertaking): he masterminded the robbery
 
n
2.  a person of great intelligence or executive talent, esp one who directs an undertaking

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

mastermind
1720, "an outstanding intellect," from master + mind. Meaning "head of a criminal enterprise" is first attested 1872.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
He was an architectural mastermind of breathtaking proportions.
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