Among the currently most popular synonyms for mastermind are: frame, inventor, architect, initiate, cerebrum, hatch, genius, lead, forge, come up with, supervise, boss, planner, generate, create, skull, direct, manage, turn, manager, dream up, director, author, work out, head, initiator, orchestrate, run, guide, conceive, arrange, plan, engineer, control, coordinate, regulate, brilliance, devise, originator, think up, organizer, rocket scientist, prime mover, brains, genie, intellect, conduct, brain, put together, originate, organize, administer, superintend.