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

guru

a religious leader or teacher in the Hindu or Sikh religion

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

crossfit noun

March 23, 2015
high-intensity strength training Two women in strappy dresses discussed how much weight they could snatch

Read More