machinator

verb (used with or without object), mach·i·nat·ed, mach·i·nat·ing.

1. to contrive or plot, especially artfully or with evil purpose: to machinate the overthrow of the government.

verb

1. (usually tr) to contrive, plan, or devise (schemes, plots, etc)

n.1610s, from Latin machinator, agent noun from past participle stem of machinari “design, contrive, plot” (see machine (n.)). v.“lay plots, intrigue,” c.1600, a back-formation from machination, or else from Latin machinatus, past participle of machinari (see machination). Related: Machinated; machinating; machinator.