amoral (?.)
- conscienceless
- corrupt
- corrupted
- criminal
- crooked
- dark
- devious
- dishonest
- dishonorable
- doubtful
- dubious
- evasive
- felonious
- fishy
- fraudulent
- ill-got
- ill-gotten
- immoral
- indirect
- insidious
- nonmoral
- not kosher
- questionable
- rotten
- shady
- shameless
- shifty
- sinister
- slippery
- steeped in vice
- suspicious
- tricky
- unconscienced
- unconscientious
- unconscionable
- underhand
- underhanded
- unethical
- unmoral
- unprincipled
- unsavory
- unscrupulous
- unstraightforward
- vice-laden
- vice-prone
- vicious
- without remorse
- without shame
