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).

Apr 15, 2026 · 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 leg

ILLEGAL definition: 1. not allowed by law: 2. not allowed by the rules of a sport: 3. an offensive word for someone…. Learn more.

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.

Illegal, unlawful, illegitimate, illicit, criminal can all describe actions not in accord with law. Illegal refers most specifically to violations of statutes or, in organized athl

(of a person, sometimes offensive) Being or doing something illegally. Illegal immigrant; illegal logger; illegal pilot.

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.

Something illegal is against the law or breaks the rules. If you're reading this in jail, you've probably done something illegal, and if you're not in jail, there's plenty of time

Illegal immigrants or workers have traveled into a country or are working without official permission.

illegal Definition of "illegal" Something that is not allowed by the law How to use "illegal" in a sentence Selling stolen goods is illegal and punishable by law. Driving over the