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adj.
characterized by elaborate scheming and intrigue; devious; "Byzantine methods for holding on to his chairmanship"; "a fine hand for Byzantine deals and cozy arrangements"
adj.
marked by skill in deception; "cunning men often pass for wise"; "deep political machinations"; "a foxy scheme"; "a slick evasive answer"; "sly as a fox"; "tricky Dick"; "a wily old attorney"