illegal

Synonyms: actionable banned black-market bootleg contraband criminal crooked extralegal felonious forbidden heavy hot illegitimate illicit interdicted irregular lawless not approved not legal outlawed outside the law prohibited proscribed prosecutable racket shady smuggled sub rosa taboo unauthorized unconstitutional under the table unlawful unlicensed unofficial unwarrantable unwarranted verboten violating wildcat wrongful

Antonyms: allowed authorized ethical good lawful legal legitimate moral permissible right