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adjectiveprohibited by law or by official or accepted rules
Similar:
black-market bootleg contraband criminal dirty embezzled extrajudicial extralegal felonious hot ill-gotten illegitimate illicit ineligible misappropriated misbranded mislabeled nonlegal outlaw outlawed penal prohibited punishable smuggled under-the-counter unlawful unratified amerciable banned blackOpposite:
Examples of illegal
- "an illegal chess move"