The meaning of ILLEGAL is not according to or authorized by law : contrary to or in violation of a law : unlawful, illicit; also : not sanctioned by official rules (as of a game).

ILLEGAL definition: forbidden by law or statute. See examples of illegal used in a sentence.

An illegal immigrant / alien is a person who has entered a country without government permission.

1. Prohibited by law. 2. Prohibited by official rules: an illegal pass in football. 3. Unacceptable to or not performable by a computer: an illegal operation.

6 days ago · According to Black's Law Dictionary (2nd edition), "illegal" may mean only that something lacks authority of the law or support from law (that is, that it's not legal), not that it's against the law, …

Definition of illegal adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Illegal definition: Prohibited by law.Illegal Sentence Examples There was nothing illegal going on, simply mysterious. It was hard to picture him involved with anything illegal... but why? Does illegal …

ILLEGAL meaning: 1 : not allowed by the law not legal; 2 : not allowed by the rules in a game

There are six meanings listed in OED's entry for the word illegal, one of which is considered offensive. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

If something is illegal, the law says that it is not allowed. It is illegal to intercept radio messages. ...illegal drugs.