1
as in unlawful
contrary to or forbidden by law
it is illegal to import those birds into this country
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in foul
not being in accordance with the rules or standards of what is fair in sport
an illegal pass
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of illegal
Louisville police say anything that goes into the air or explodes is illegal for average citizens.
—
James Bruggers, The Courier-Journal, 5 July 2017
Official fireworks shows took place over the city, and illegal pyrotechnics lit up the sky everywhere in between.
—Lisa Beebe, Los Angeles Magazine, 5 July 2017
Facebook has been scrutinized for its handling of its users’ data, and social networks face fines in Germany for failing to swiftly take down hate speech and illegal content.
—Amie Tsang, New York Times, 4 July 2017
In the 1950s and 1960s, major city hospitals in the United States admitted as many as 20 to 30 women a day for complications from illegal or self-induced abortions.
—Cindy Crabb, Teen Vogue, 1 July 2017
Will Ferrell and Amy Poehler as a stuck-in-a-rut suburban couple who open an illegal casino to pay for their daughter's college tuition.
—Owen Gleiberman, chicagotribune.com, 30 June 2017
They are charged with illegal re-entry into the United States after previous deportation or removal, according to Acting U.S. Attorney Robert O. Posey and U.S. Immigrations and Customs Enforcement Special Agent in Charge Ray Parmer.
—Carol Robinson, AL.com, 30 June 2017
Trump later walked back these comments, sort of, saying that instead, doctors should be punished for providing abortions if the procedure were made illegal.
—Michael Sebastian, Cosmopolitan, 29 June 2017
A Helsinki district court on Wednesday ordered the assets of Uber's Finnish country manager be confiscated until police conclude an investigation into whether the U.S. ride-hailing firm operates an illegal taxi service in Finland.
—Reuters, Fortune, 28 June 2017
James Bruggers, The Courier-Journal, 5 July 2017
Official fireworks shows took place over the city, and illegal pyrotechnics lit up the sky everywhere in between.
—Lisa Beebe, Los Angeles Magazine, 5 July 2017
Facebook has been scrutinized for its handling of its users’ data, and social networks face fines in Germany for failing to swiftly take down hate speech and illegal content.
—Amie Tsang, New York Times, 4 July 2017
In the 1950s and 1960s, major city hospitals in the United States admitted as many as 20 to 30 women a day for complications from illegal or self-induced abortions.
—Cindy Crabb, Teen Vogue, 1 July 2017
Will Ferrell and Amy Poehler as a stuck-in-a-rut suburban couple who open an illegal casino to pay for their daughter's college tuition.
—Owen Gleiberman, chicagotribune.com, 30 June 2017
They are charged with illegal re-entry into the United States after previous deportation or removal, according to Acting U.S. Attorney Robert O. Posey and U.S. Immigrations and Customs Enforcement Special Agent in Charge Ray Parmer.
—Carol Robinson, AL.com, 30 June 2017
Trump later walked back these comments, sort of, saying that instead, doctors should be punished for providing abortions if the procedure were made illegal.
—Michael Sebastian, Cosmopolitan, 29 June 2017
A Helsinki district court on Wednesday ordered the assets of Uber's Finnish country manager be confiscated until police conclude an investigation into whether the U.S. ride-hailing firm operates an illegal taxi service in Finland.
—Reuters, Fortune, 28 June 2017
Recent Examples of Synonyms for illegal
Adjective
-
Multiple lawsuits from advocacy groups, Capitol police officers and others call the program unlawful and corrupt, as Congress presses acting Atty.—
Michael Kunzelman,
Los Angeles Times,
29 May 2026
-
Kelly's mother, Barbara Renner, is charged with manslaughter, and her daughter, Elyssa Seymore, is charged with unlawful imprisonment.—
Mahsa Saeidi,
CBS News,
28 May 2026
Adjective
-
Cenac lacks efficiency and foul discipline at times — a weakness that was on display in the NCAA Tournament — but also has shown the potential to dominate the paint both as a defender and a scorer.—
Julia Poe,
Chicago Tribune,
6 June 2026
-
Smith then lined the two-run homer just inside the foul pole in left field.—
CBS News,
CBS News,
6 June 2026
Adjective
-
The store was run by Sam Yuen, head of one of Los Angeles’ tongs, which were secret societies made up of men from China who often dabbled in illicit activities.—
Emily St. Martin,
Los Angeles Times,
11 June 2026
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The phenomenon of illicit mining in Johannesburg and surrounding areas was one of the concerns that prompted the government in March to deploy the army to certain high-risk areas in a yearlong operation to stop violence linked to organized crime.—
CBS News,
CBS News,
10 June 2026
Adjective
-
Marlowe earned the right — even in an increasingly unfair business — to exit on his terms.—
Troy Renck,
Denver Post,
11 June 2026
-
France having him and Saliba is frankly unfair.—
Liam Twomey,
New York Times,
11 June 2026
Adjective
-
Chesnut said El Mencho, raised in the deeply Catholic Mexican state of Michoacan, echoes other criminal actors who’ve balanced villainy and veneration, bypassing traditional religious frameworks to absolve ― or even justify ― the deeds that reap their daily bread.—
Marc Ramirez,
USA Today,
7 June 2026
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With nothing holding her down but a dead-end job and an aging dad, a small-town Texan girl is swiftly bedazzled by a smooth criminal drifter, and hops into his car to pursue a life less ordinary.—
Guy Lodge,
Variety,
7 June 2026
Adjective
-
Flu season may be mostly behind us, but a nasty, highly contagious stomach bug is rising.—
NBC news,
NBC news,
29 May 2026
-
Rhaenyra is suddenly dealing with internal criticism, possible rebellions, subjects spray-painting nasty stuff on the walls and self-doubt.—
Bryan Alexander,
USA Today,
29 May 2026
Cite this Entry
“Illegal.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/illegal. Accessed 13 Jun. 2026.
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