criminal

[1]	felon , crook , outlaw , malefactor
[2]	felon , convict , lawbreaker , outlaw , culprit , offender , miscreant , malefactor , wrongdoer , villain , scoundrel , knave , blackguard , gangster , Mafioso , desperado , racketeer , hoodlum , thug , hooligan , tough , ruffian , terrorist , (Colloq) roughneck , bad guy , black hat , bad hat , baddie/baddy , crook , (Slang) hood , (US) mobster

adj.

[1]	illegal , unlawful , illicit , lawless , dishonest , (Colloq) crooked
[2]	wicked , condemnable , deplorable , evil , bad , reprehensible , vicious , wrong , corrupt , vile , black , immoral , amoral , sinful , villainous , iniquitous , flagitious , depraved , disgraceful , reprehensible
[3]	felonious