illegitimate

adjective

il·​le·​git·​i·​mate ˌi-li-ˈji-tə-mət How to pronounce illegitimate (audio)
1
a
: not recognized as lawful offspring
b
: born of parents not married to each other
2
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
3
: not rightly deduced or inferred : illogical
4
: departing from the regular : erratic
illegitimately adverb

Examples of illegitimate in a Sentence

She thinks that my concerns are illegitimate. They were fired from their jobs for illegitimate reasons.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Carlson said he's seen a lot of online comments on posts about his new record claiming the fish's weight seems impossible and bow fishing being illegitimate. Natalie Davies, Freep.com, 23 July 2025 However, in past few years, the European Union has focused its attention on regulating activities in freeports, especially after increasing instances of use of these freeports, including those in Switzerland and Geneva, for illegitimate activities. Priya Prakash Royal Esq. Ll.m. Mba Aep Tep, Forbes.com, 1 June 2025 The Chinese refused to participate in the proceedings and maintain the decision is illegitimate. Micah McCartney, MSNBC Newsweek, 16 May 2025 Trump’s comments came as Secretary of State Marco Rubio announced sanctions against U.N. official Francesca Albanese, accusing her of pushing illegitimate efforts at the International Criminal Court targeting U.S. and Israeli leaders. Samantha-Jo Roth, The Washington Examiner, 9 July 2025 See All Example Sentences for illegitimate

Word History

First Known Use

1536, in the meaning defined at sense 1a

Time Traveler
The first known use of illegitimate was in 1536

Browse Nearby Words

Cite this Entry

“Illegitimate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/illegitimate. Accessed 29 Jul. 2025.

Kids Definition

illegitimate

adjective
il·​le·​git·​i·​mate ˌil-i-ˈjit-ə-mət How to pronounce illegitimate (audio)
1
: born of a father and mother who are not married
2
illegitimately adverb

Legal Definition

illegitimate

adjective
il·​le·​git·​i·​mate ˌi-li-ˈji-tə-mət How to pronounce illegitimate (audio)
1
: not recognized by the law as offspring
specifically : born out of marriage

Note: An illegitimate child is usually legitimated by his or her parents' later marriage. Illegitimate children generally have the same inheritance rights under intestate successions as legitimate children; statutes limiting their inheritance rights have been found to violate the equal protection clause.

2
: not valid according to law
illegitimate noun

More from Merriam-Webster on illegitimate

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