(n.) The quality of being perfidious; perfidy.

Anschluss accompaniment accordance addition affiliation agglomeration aggregation agreement alliance amalgamation art artful dodge artifice assimilation association blend blending blind cabal cahoots cartel centralization chicane chicanery co-working coaction coalescence coalition coincidence collaboration collectivity collusion combination combine combined effort combo complicity complot composition concert concerted action concomitance concordance concourse concurrence confederacy confederation confluence congeries conglomeration conjugation conjunction conn connivance connivery consilience consolidation contrivance contriving cooperation correspondence counterplot coup covin craft cute trick deceit deep-laid plot design device dirty work disloyalty dodge dodgery ecumenism embodiment encompassment engineering enosis expedient faithlessness fakement falsity federalization federation feint fetch finagling finesse foul play frame-up fusion gambit game gimmick grift hookup inclusion incorporation integration intrigue jugglery junction junta knavery league little game machination maneuver maneuvering manipulation marriage meld melding merger move package package deal parasitism perfidiousness perfidy pettifoggery pettifogging plot plotting ploy practice racket red herring rigging ruse saprophytism scheme schemery scheming sedition sharp practice shift simultaneity skulduggery sleight solidification stratagem strategy subterfuge supercherie symbiosis synchronism syncretism syndication syneresis synergy synthesis tactic tie-up treacherousness treachery treason trick trickery underhand dealing underplot unification union united action web of intrigue wedding wile wily device wire-pulling