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Synonyms

illegitimate

American  
[il-i-jit-uh-mit, il-i-jit-uh-meyt] / ˌɪl ɪˈdʒɪt ə mɪt, ˌɪl ɪˈdʒɪt əˌmeɪt /

adjective

  1. born of parents who are not married to each other; born out of wedlock.

    an illegitimate child.

  2. not legitimate; not sanctioned by law or custom.

  3. unlawful; illegal.

    an illegitimate action.

  4. irregular; not in good usage.

  5. Logic. not in accordance with the principles of valid inference.

  6. Obsolete. (formerly, in London)

    1. of or relating to stage plays in which musical numbers were inserted because of laws that gave only a few theaters the exclusive right to produce straight dramas.

    2. acting in or producing such productions.


noun

  1. a person recognized or looked upon as illegitimate.

verb (used with object)

illegitimated, illegitimating
  1. to declare illegitimate.

illegitimate British  
/ ˌɪlɪˈdʒɪtɪmɪt /

adjective

  1. born of parents who were not married to each other at the time of birth; bastard

  2. forbidden by law; illegal; unlawful

  3. contrary to logic; incorrectly reasoned

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. an illegitimate person; bastard

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

See illegal.

Other Word Forms

Etymology

Origin of illegitimate

First recorded in 1530–40; il- 2 + legitimate

Explanation

Something illegitimate is unlawful, or improper. If you're a doctor, even a great doctor, but you were never certified by the medical board, then you're an illegitimate doctor. Illegitimate has the root for "law" in it, and something illegitimate is outside the law or custom. A child not born to married parents is known as an illegitimate child, although so many people are making different choices about how to raise families, that the stigma is dropping away, especially if the child isn't the result of philandering (cheating). In King Lear, Edmund is mad that he's an illegitimate son, because it means he can't inherit the throne.

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Vocabulary lists containing illegitimate

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Illegitimate or not, Visible activated the accounts and ported the numbers in the first place.

From The Verge • Feb. 23, 2022

He read Bruce E. Levine’s “Resisting Illegitimate Authority,” as well as Mohamedou Ould Slahi’s “Guantánamo Diary,” the chilling account of Slahi’s imprisonment at Guantánamo Bay under the supervision of military, C.I.A. and F.B.I. interrogators.

From New York Times • Sep. 1, 2021

To illustrate this diversity, I profile twenty famous U.S. anti-authoritarians in Resisting Illegitimate Authority.

From Salon • Mar. 17, 2019

Q. Illegitimate Half Brother's Inheritance: Five years ago, my sister and I discovered the existence of our father's biological son from a secret second family.

From Slate • Nov. 19, 2012

Illegitimate births are, however, more numerous in the cities than in the country.

From The Task of Social Hygiene by Ellis, Havelock

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