unlawful

adjective

un·​law·​ful ˌən-ˈlȯ-fəl How to pronounce unlawful (audio)
Synonyms of unlawfulnext
1
a
: not lawful : illegal
unlawful actions
b
: acting contrary to or in defiance of the law
an unlawful possessor
2
: not morally right or conventional
unlawfully adverb
unlawfulness noun

Examples of unlawful in a Sentence

The sale of alcohol to minors is unlawful. it is unlawful to set off fireworks within the city limits
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.
The alert said the Los Angeles Police Department had declared the unlawful gathering along Alameda Street between Aliso Street and Temple Street. Sarah D. Wire, USA Today, 29 Mar. 2026 Heifler was charged with ferdeal counts of unlawful possession of a destructive devices and unlawful making of destructive devices, officials said. Rocco Parascandola, New York Daily News, 27 Mar. 2026 Stanford School of Medicine prohibits unlawful discrimination on the basis of race, color, national or ethnic origin, or any other characteristic protected by applicable law. Mary Kekatos, ABC News, 27 Mar. 2026 Dozens of participants were later charged with misdemeanor offenses related to unlawful assembly and obstruction, with many ultimately placed into diversion programs requiring community service. Cierra Morgan, Los Angeles Times, 27 Mar. 2026 See All Example Sentences for unlawful

Word History

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of unlawful was in the 14th century

Browse Nearby Words

Cite this Entry

“Unlawful.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unlawful. Accessed 1 Apr. 2026.

Kids Definition

unlawful

adjective
un·​law·​ful ˌən-ˈlȯ-fəl How to pronounce unlawful (audio)
ˈən-
: not lawful : being against the law : illegal
unlawfully adverb
unlawfulness noun

Legal Definition

unlawful

adjective
un·​law·​ful
1
: not lawful : not authorized or justified by law
2
: acting contrary to or in defiance of the law
an unlawful possessor
unlawfully adverb
unlawfulness noun

More from Merriam-Webster on unlawful

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster