Synonyms of criminal in English:

criminal


See definition of criminal

noun

1‘she struck up a friendship with a convicted criminal’

SYNONYMS

lawbreaker, offender, villain, delinquent, malefactor, culprit, wrongdoer, transgressor, sinner

young offender, juvenile delinquent

felon, thief, robber, armed robber, burglar, housebreaker, shoplifter, mugger, rapist, fraudster, swindler, racketeer, gunman, gangster, outlaw, bandit, terrorist, bioterrorist, narcoterrorist, ecoterrorist, cyberterrorist, agroterrorist

yakuza

informal crook, con, jailbird, lag, old lag, lifer, baddy

North American informal yardbird, yegg

Australian informal crim

South African informal lighty

West Indian informal tief

British rhyming slang tea leaf

informal, dated cracksman

malfeasant, misfeasor, infractor

archaic miscreant, trespasser, trusty, transport

rare peculator, defalcator


adjective

1‘they were found guilty of criminal conduct’

SYNONYMS

unlawful, illegal, against the law, illicit, illegitimate, lawbreaking, lawless, felonious, delinquent, culpable, villainous, nefarious, corrupt, fraudulent

indictable, punishable, actionable, unauthorized, unsanctioned, outlawed, banned, forbidden, interdicted, proscribed

wrong, bad, evil, wicked, iniquitous

informal crooked, shady, dirty

British informal bent, dodgy

malfeasant

ANTONYMS

lawful

2‘closing the railway would be criminal folly’

SYNONYMS

deplorable, preposterous, shameful, reprehensible, disgraceful, inexcusable, unforgivable, unpardonable, unacceptable

senseless, foolish, ridiculous, outrageous, monstrous, shocking, scandalous

wicked, sinful, immoral, iniquitous

rare egregious

ANTONYMS

commendable