Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “illegal”

See all translations

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)
What is the pronunciation of illegal?
Add Cambridge dictionaries to your browser to your website

Definitions of “illegal” in other dictionaries

Word of the Day

past participle

the form of a verb, usually made by adding -ed, used in some grammatical structures such as the passive and the present perfect

Word of the Day

Euphemisms (Words used to Avoid Offending People)

by Kate Woodford,
March 04, 2015
​​​ We recently looked at the language that we use to describe lies and lying. One area of lying that we considered was ‘being slightly dishonest, or not speaking the complete truth’. One reason for not speaking the complete truth is to avoid saying something that might upset or offend people. Words and

Read More 

snapchat verb

March 02, 2015
to send someone a message using the photomessaging application Snapchat We used to have a thing until he got a girlfriend. now

Read More