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Synonyms

legitimize

American  
[li-jit-uh-mahyz] / lɪˈdʒɪt əˌmaɪz /
especially British, legitimise especially british, legitimatize,

verb (used with object)

legitimized, legitimizing
  1. to make legitimate.


legitimize British  
/ lɪˈdʒɪtɪməˌtaɪz, lɪˈdʒɪtɪˌmaɪz /

verb

  1. (tr) to make legitimate; legalize

"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

Other Word Forms

Etymology

Origin of legitimize

First recorded in 1645–55; from Latin lēgitim(us) ( see legitim) + -ize

Explanation

When you legitimize something, you officially approve it, or make it legal. For example, a 1967 Supreme Court case legitimized interracial marriage in the United States. The verb legitimize is very similar to legalize, although there are some slight differences between the two. When you legalize something, you also legitimize it — it's permitted, or allowed. But when you legitimize something, it doesn't always involve the legal system. For example, your teacher might legitimize open-book tests or your boss could legitimize bringing dogs to work.

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Vocabulary lists containing legitimize

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.

Cases like Lynch helped legitimize claims for Black citizenship, portraying birthright citizenship as an American tradition.

From Slate • Mar. 18, 2026

While an MoU is no more than a non-binding agreement, the pact built on both countries’ efforts to legitimize quantum computing.

From Barron's • Mar. 17, 2026

With such blatant motives, the press can either interrogate this relationship or help legitimize it.

From Salon • Jan. 5, 2026

In the decades that followed, in his complementary positions as book critic and editor, Cowley worked tirelessly to legitimize the innovative writing of Hemingway, John Dos Passos, Hart Crane, E.E.

From The Wall Street Journal • Nov. 7, 2025

Many Eurasian states and empires had official religions that contributed to state cohesion, being invoked to legitimize the political leadership and to sanction wars against other peoples.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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