of the nature of or involving crime.

guilty of crime.

Law . of or pertaining to crime or its punishment

a criminal proceeding.

senseless; foolish

It's criminal to waste so much good food.

exorbitant; grossly overpriced

They charge absolutely criminal prices.

a person guilty or convicted of a crime.

adjective

correct , lawful , legal , moral , right , righteous

noun

law , police

adjective

bent , caught , corrupt , crooked , culpable , deplorable , dirty , heavy , hung up * , illegal , illegitimate , illicit , immoral , indictable , iniquitous , nefarious , off base * , out of line , peccant , racket , scandalous , senseless , shady * , smoking gun * , unlawful , unrighteous , vicious , villainous , wicked , wildcat * , wrong , lawless , wrongful

noun

bad actor , blackmailer , black marketeer , con , convict , crook , culprit , delinquent , desperado , deuce , evildoer , ex-con , felon , fugitive , gangster , guerilla , heavy * , hood * , hoodlum , hooligan * , hustler , inside person , jailbird , lawbreaker , malefactor , mobster , mug , muscle * , offender , outlaw , racketeer , repeater , scofflaw , sinner , slippery eel , thug * , transgressor , trespasser , wrongdoer , yardbird , corrupt , criminaloid , culpable , deplorable , guilty , hood , illegal , inmate , lawless , miscreant , reprehensible , thug