Definition of illegitimate adjective from the Oxford Advanced Learner's Dictionary

     

    illegitimate

     adjective
    adjective
    BrE BrE//ˌɪləˈdʒɪtəmət//
     
    ; NAmE NAmE//ˌɪləˈdʒɪtəmət//
     
    Justice, Family background
     
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  1. 1born to parents who are not married to each other See related entries: Family background
  2. 2(formal) not allowed by a particular set of rules or by law synonym unauthorized illegitimate use of company property See related entries: Justice
  3. opposite legitimate
    Word Origin mid 16th cent.: from late Latin illegitimus (from in- ‘not’ + legitimus ‘lawful’), suggested by legitimate.
See the Oxford Advanced American Dictionary entry: illegitimate