deceitful and cunning; using any means necessary to achieve a goal, including deceit
► uses
Uses:
That land which knows not truth,” he continued with Machiavellian subtlety, “that land of infinite fiction makes bad reading for any boy; and is certainly not what I should choose or recommend for my young friend here, who is already so much inclined to melancholy,
Marcel Proust. In Search of Lost Time [volume 1] Swann’s Way
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it was, of all people, Patrolman Mancuso. I, of course, ignored the Machiavel’s faint mongoloid grin by pretending to tighten my earring.
John Kennedy Toole. A Confederacy of Dunces (1980)