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1. Plan and direct (a complex undertaking)
   "he masterminded the robbery"
   - engineer, direct, organize, organise [Brit], orchestrate

1. Someone who creates new things
   - originator, conceiver
    
2. Someone who has exceptional intellectual ability and originality
   - genius, brain, brainiac [N. Amer], Einstein, brainbox [Brit]

Derived forms: masterminded, masterminding, masterminds

Type of: creator, intellect, intellectual, plan

Encyclopedia: Mastermind