il·​le·​gal·​ize | \ (ˌ)i(l)-ˈlē-gə-ˌlīz How to pronounce illegalize (audio) \
illegalized; illegalizing; illegalizes

Definition of illegalize

transitive verb

: to make or declare illegal

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Other Words from illegalize

illegalization \ (ˌ)i(l)-​ˌlē-​gə-​lə-​ˈzā-​shən How to pronounce illegalize (audio) \ noun

Synonyms & Antonyms for illegalize



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Examples of illegalize in a Sentence

a bill that would illegalize the private use of fireworks
Recent Examples on the Web Basis for the suit to illegalize the union, lawyers explained, is the difference in race between the participants., "The Yatko case," 28 Feb. 2018 Rather than negotiating a political agreement, Madrid decided to illegalize Basque political parties allegedly linked with terrorism and to prosecute their leaders. Sergi Pardos-prado, Washington Post, "Catalonia’s three ways forward," 28 Oct. 2017 The Therapeutic Fraud Prevention Act, a bill focused on illegalizing any conversion therapy that charges money, was filed in the U.S. Senate in April. Joseph Frankel, The Atlantic, "More and More States Outlawing Gay-Conversion Therapy," 10 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'illegalize.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of illegalize

circa 1818, in the meaning defined above

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Time Traveler for illegalize

Time Traveler

The first known use of illegalize was circa 1818

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Cite this Entry

“Illegalize.” Dictionary, Merriam-Webster, Accessed 19 Jan. 2021.

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More Definitions for illegalize


transitive verb
il·​le·​ga·​lize | \ il-ˈlē-gə-ˌlīz How to pronounce illegalize (audio) \

Legal Definition of illegalize

: to make or declare illegal — compare criminalize

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