Synonyms:
- Byzantine,
- Machiavellian,
- Machiavellic,
- acute,
- adroit,
- arch,
- artful,
- astute,
- back-door,
- backstairs,
- cagey,
- calculating,
- canny,
- clandestine,
- clever,
- covert,
- crafty,
- creep,
- crooked,
- cunning,
- cute,
- deceitful,
- deep,
- deep-laid,
- designing,
- devious,
- dexterous,
- diplomatic,
- dishonest,
- disingenuous,
- downy,
- feline,
- foxy,
- furtive,
- guileful,
- gumshoe,
- hidlings,
- hole-and-corner,
- hugger-mugger,
- ingenious,
- insidious,
- inventive,
- knowing,
- lurk,
- masterful,
- pawky,
- politic,
- predatory,
- privy,
- quiet,
- ready,
- resourceful,
- scheming,
- serpentine,
- shady,
- sharp,
- shifty,
- shrewd,
- skulk,
- skulking,
- slick,
- slide,
- slim,
- slink,
- slinking,
- slinky,
- slippery,
- smart,
- smooth,
- snake,
- snaky,
- sneaking,
- sneaky,
- snook,
- sophistical,
- steal,
- stealthy,
- strategic,
- subtile,
- subtle,
- supple,
- surreptitious,
- tactical,
- trickish,
- tricksy,
- tricky,
- under-the-counter,
- under-the-table,
- undercover,
- underground,
- underhand,
- underhanded,
- unfrank,
- unobtrusive,
- unscrupulous,
- vulpine,
- wary,
- wily