Definition of illegal noun from the Oxford Advanced Learner's Dictionary

  

illegal

 noun
noun
BrE BrE//ɪˈliːɡl//
 
; NAmE NAmE//ɪˈliːɡl//
 
Immigration
 
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(North American English) a person who lives or works in a country illegally See related entries: Immigration Word Origin early 17th cent.: from French illégal or medieval Latin illegalis, from Latin in- ‘not’ + legalis ‘according to the law’.
See the Oxford Advanced American Dictionary entry: illegal

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