Simple Definition of illegitimate
: born to a father and mother who are not married
: not allowed according to rules or laws
: not reasonable or fair
Full Definition of illegitimate
1 : not recognized as lawful offspring; specifically : born of parents not married to each other
2 : not rightly deduced or inferred : illogical
3 : departing from the regular : erratic
4 a : not sanctioned by law : illegal b : not authorized by good usage c of a taxon : published but not in accordance with the rules of the relevant international code
Examples of illegitimate
She thinks that my concerns are illegitimate.
They were fired from their jobs for illegitimate reasons.
First Known Use of illegitimate
Learn More about illegitimate
Thesaurus: All synonyms and antonyms for "illegitimate" Spanish Central: Translation of "illegitimate" Nglish: Translation of "illegitimate" for Spanish speakers Britannica English: Translation of "illegitimate" for Arabic speakers
Seen and Heard
What made you want to look up illegitimate? Please tell us where you read or heard it (including the quote, if possible).