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Synonyms

natural law

American  

noun

  1. a principle or body of laws considered as derived from nature, right reason, or religion and as ethically binding in human society.

natural law British  

noun

  1. an ethical belief or system of beliefs supposed to be inherent in human nature and discoverable by reason rather than revelation

  2. a nonlogically necessary truth; law of nature See also nomological

  3. the philosophical doctrine that the authority of the legal system or of certain laws derives from their justifiability by reason, and indeed that a legal system which cannot be so justified has no authority

"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
natural law Cultural  

  1. The doctrine that human affairs should be governed by ethical principles that are part of the very nature of things and that can be understood by reason. The first two paragraphs of the Declaration of Independence contain a clear statement of the doctrine.

Etymology

Origin of natural law

Middle English word dating back to 1350–1400

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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.

These features represent human choice, not a natural law, and it’s possible to program AI to generate value while reflecting humanity’s deepest values.

From The Wall Street Journal • Jan. 15, 2026

This is a suppression of the natural law.

From BBC • Sep. 24, 2024

Still, if any natural law applies to California, it is that what comes down will eventually go up.

From New York Times • Apr. 30, 2024

"An important component of this proposed natural law is the idea of 'selection for function,'" says Carnegie astrobiologist Dr. Michael L. Wong, first author of the study.

From Science Daily • Oct. 16, 2023

In the experimental chambers, Mr. Gitney delivered addresses on our expedition to witness the Transit of Venus and the determination of natural law.

From "The Astonishing Life of Octavian Nothing, Traitor to the Nation, Volume I: The Pox Party" by M.T. Anderson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.