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English definition of “illegal”

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illegal

adjective uk   /ɪˈliː.ɡəl/ us  
B2 not allowed by law: a campaign to stop the illegal sale of cigarettes to children under 16 Prostitution is illegal in some countries. It is illegal to drive a car that is not registered and insured. Cocaine, LSD, and heroin are all illegal drugs/substances.
More examples
illegally
adverb uk   /-i/ us  
B2 They entered the country illegally. an illegally parked car

illegal

noun [C] // informal
someone who lives or works in another country when they do not have the legal right to do this: He said ID cards would make it easier to deport illegals.
Translations of “illegal”
in Korean 불법의…
in Arabic غَيْر قَانُوني…
in French illégal…
in Turkish yasadışı, kanuna/yasalara aykırı…
in Italian illegale…
in Chinese (Traditional) 非法的,違法的…
in Russian незаконный…
in Polish nielegalny…
in Spanish ilegal…
in Portuguese ilegal…
in German ungesetzlich…
in Catalan il·legal, il·lícit…
in Japanese 違法の…
in Chinese (Simplified) 非法的,违法的…
(Definition of illegal from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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