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

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

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

Sep 22, 2025 · 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 …

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

Synonyms for ILLEGAL: unlawful, illicit, criminal, felonious, wrongful, unauthorized, forbidden, illegitimate; Antonyms of ILLEGAL: legal, lawful, legitimate, right, ethical, good, permitted, …

(Definition of illegal from the Cambridge Learner's Dictionary © Cambridge University Press)

11 hours ago · Fox News' Chanley Painter provides details on victims' identities following a fatal car crash in California involving an illegal immigrant who was issued a commerical driver's …

16 hours ago · An illegal alien truck driver accused of causing a crash in Florida that killed three people failed his commercial driver’s license (CDL) test 10 times in two months before finally …