Synonyms:
- amoral,
- artful,
- back-door,
- backstairs,
- calculating,
- chiseling,
- clandestine,
- collusive,
- conscienceless,
- corrupt,
- corrupted,
- covert,
- covinous,
- crafty,
- criminal,
- crooked,
- cunning,
- dark,
- deceitful,
- devious,
- dishonest,
- dishonorable,
- doubtful,
- dubious,
- duplicitous,
- evasive,
- false,
- falsehearted,
- feline,
- felonious,
- finagling,
- fishy,
- fraudulent,
- furtive,
- guileful,
- hidlings,
- hole-and-corner,
- hugger-mugger,
- ill-got,
- ill-gotten,
- immoral,
- indirect,
- insidious,
- not kosher,
- privy,
- questionable,
- quiet,
- rotten,
- scheming,
- shady,
- shameless,
- sharp,
- shifty,
- sinister,
- skulking,
- slinking,
- slinky,
- slippery,
- sly,
- sneaking,
- sneaky,
- stealthy,
- surreptitious,
- suspicious,
- treacherous,
- trickish,
- tricky,
- two-faced,
- unconscienced,
- unconscientious,
- unconscionable,
- under-the-counter,
- under-the-table,
- undercover,
- underground,
- underhand,
- undermanned,
- understaffed,
- unethical,
- unobtrusive,
- unprincipled,
- unsavory,
- unscrupulous,
- unstraightforward,
- wily,
- without remorse,
- without shame