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Showing results for unlawful. Search instead for unlawful acts.
Synonyms

unlawful

American  
[uhn-law-fuhl] / ʌnˈlɔ fəl /

adjective

  1. not lawful; contrary to law; illegal.

    Synonyms:
    illicit
  2. born out of wedlock; illegitimate.

    Synonyms:
    natural, bastard

unlawful British  
/ ʌnˈlɔːfʊl /

adjective

  1. illegal

  2. illicit; immoral

    unlawful love

  3. an archaic word for illegitimate

"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

  • unlawfully adverb
  • unlawfulness noun

Etymology

Origin of unlawful

First recorded in 1250–1300, unlawful is from the Middle English word unlaweful. See un- 1, lawful

Compare meaning

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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.

The specific agreement made with ICE by the Mille Lacs sheriff appears to have been initially unlawful, according to an opinion from the Minnesota attorney general’s office included in the documents.

From Salon • Apr. 10, 2026

The judge also ruled that the Pentagon’s closure of a special area reserved for Pentagon correspondents was unlawful and undermined the court’s previous order.

From The Wall Street Journal • Apr. 10, 2026

The plan had faced a High Court challenge from rivals who argued Lidl was trying to use an unlawful loophole to operate an off-licence.

From BBC • Apr. 9, 2026

"We're grateful the court recognized these issues need to be resolved quickly and remain confident the courts will ultimately agree that these supply chain designations were unlawful," an Anthropic spokesperson told AFP.

From Barron's • Apr. 9, 2026

“This is an unlawful assembly,” blared a voice from the chopper.

From "Anger Is a Gift" by Mark Oshiro