Source : Webster's Revised Unabridged Dictionary (1913)

Complot \Com"plot\, n. [F. complot, prob. for comploit, fr.L.
   complicitum, prop. p. p. of complicare, but equiv. to
   complicatio complication, entangling. See {Complicate}, and
   cf. {Plot}.]
   A plotting together; a confederacy in some evil design; a
   conspiracy.

         I know their complot is to have my life. --Shak.

Complot \Com*plot"\, v. t. & i. [imp. & p. p. {Complotted}; p.
   pr. & vb. n. {Complotting}.] [Cf. F. comploter, fr. complot.]
   To plot or plan together; to conspire; to join in a secret
   design.

         We find them complotting together, and contriving a new
         scene of miseries to the Trojans.        --Pope.

Source : WordNet®

complot
     v : engage in plotting or enter into a conspiracy, swear
         together; "They conspired to overthrow the government"
         [syn: {conspire}, {cabal}, {conjure}, {machinate}]
     [also: {complotting}, {complotted}]