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adj.
of uncertain outcome; especially fraught with risk; "an extremely dicey future on a brave new world of liquid nitrogen, tar, and smog"- New Yorker
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"
adj.
lacking or indicating lack of confidence or assurance; "uncertain of his convictions"; "unsure of himself and his future"; "moving with uncertain (or unsure) steps"; "an uncertain smile"; "touched the ornaments with uncertain fingers"
adj.
marked by practical hardheaded intelligence; "a smart businessman"; "an astute tenant always reads the small print in a lease"; "he was too shrewd to go along with them on a road that could lead only to their overthrow"
adj.
characterized by quickness and ease in learning; "some children are brighter in one subject than another"; "smart children talk earlier than the average"
adj.
acutely insightful and wise; "much too perspicacious to be taken in by such a spurious argument"; "observant and thoughtful, he was given to asking sagacious questions"; "a source of valuable insights and sapient advice to educators"
adj.
marked by quiet and caution and secrecy; taking pains to avoid being observed; "a furtive manner"; "a sneak attack"; "stealthy footsteps"; "a surreptitious glance at his watch"
adj.
unrestrained by convention or morality; "Congreve draws a debauched aristocratic society"; "deplorably dissipated and degraded"; "riotous living"; "fast women"
adj.
fraught with danger; "dangerous waters"; "a parlous journey on stormy seas"; "a perilous voyage across the Atlantic in a small boat"; "the precarious life of an undersea diver"; "dangerous surgery followed by a touch-and-go recovery"
adj.
skillful (or showing skill) in adapting means to ends; "cool prudence and sensitive selfishness along with quick perception of what is possible--these distinguish an adroit politician"; "came up with a clever story"; "an ingenious press agent"; "an ingenious scheme"
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.
concealing crafty designs for advancing your own interest; "a selfish and designing nation obsessed with the dark schemes of European intrigue"- W.Churchill; "a scheming wife"; "a scheming gold digger"