'mastermind' definitions:

Definition of 'mastermind'

(from WordNet)
noun
Someone who creates new things [syn: originator, conceiver, mastermind]
noun
Someone who has exceptional intellectual ability and originality; "Mozart was a child genius"; "he's smart but he's no Einstein" [syn: genius, mastermind, brain, brainiac, Einstein]
verb
Plan and direct (a complex undertaking); "he masterminded the robbery" [syn: mastermind, engineer, direct, organize, organise, orchestrate]

Synonyms of 'mastermind'

From: Moby Thesaurus