COMPLOT
conspire, cabal, complot, conjure, machinate
(verb) engage in plotting or enter into a conspiracy, swear together; “They conspired to overthrow the government”
Source: WordNet® 3.1
Etymology
Noun
complot (plural complots)
(archaic) A plot (involving more than one person), conspiracy
Verb
complot (third-person singular simple present complots, present participle complotting, simple past and past participle complotted)
(archaic, ambitransitive) To plot together; conspire.
Source: Wiktionary
Com"plot, n. Etym: [F. complot, prob. for comploit, fr.L.
complicitum, prop. p. p. of complicare, but equiv. to complicatio
complication, entangling. See Complicate, and cf. Plot.]
Definition: A plotting together; a confederacy in some evil design; a
conspiracy.
I know their complot is to have my life. Shak.
Com*plot", v. t. & i. [imp. & p. p. Complotted; p. pr. & vb. n.
Complotting.] Etym: [Cf. F. comploter, fr. complot.]
Definition: To plot or plan together; to conspire; to join in a secret
design.
We find them complotting together, and contriving a new scence of
miseries to the Trojans. Pope.
Source: Webster’s Unabridged Dictionary 1913 Edition