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mastermind ˈmɑ stəmʌɪnd/Submit noun plural noun: masterminds 1. a person with an outstanding intellect. "an eminent musical mastermind" synonyms: genius, mind, intellect, author, architect, engineer, director, planner, organizer, deviser, originator, manager, prime mover, initiator, inventor; More a person who plans and directs an ingenious and complex scheme or enterprise. "McAvoy was the mastermind of the robbery"
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