con·​stan·​cy | \ ˈkän(t)-stən(t)-sē How to pronounce constancy (audio) \
plural constancies

Definition of constancy

1a : steadfastness of mind under duress : fortitude
2 : a state of being constant or unchanging

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Examples of constancy in a Sentence

the constancy of the Earth's rotation the mistaken notion that there is constancy in language—words do indeed change their meanings over time
Recent Examples on the Web What was the public health response to the constancy and intensity of yellow fever outbreaks? Karin Wulf, Smithsonian Magazine, 19 Apr. 2022 Science demands constancy, reliability and replicability. New York Times, 25 Apr. 2022 The constancy of purpose and consistency of action builds the connective tissue that brings people together at an emotional level. J. Gerald Suarez, The Arizona Republic, 8 Apr. 2022 Legal experts say the monarchy, because of its longevity and constancy, can have a moderating effect on the most extreme forces in politics. Mark Landler, New York Times, 13 Jan. 2022 With that constancy also comes an implicit message of change — again, the interplay of familiarity and surprise — new players, coaches, seasons., 4 Nov. 2021 The fifth, an ideal culmination of everything that came before it, uses this premise as a filter for Adlon’s valedictory meditations on personal history, family bonds, mortality and, above all, the constancy of change. Judy Berman, Time, 28 Feb. 2022 That constancy should earn Elizabeth a royal epithet like those of her predecessors such as William the Conqueror, Edward the Confessor, and Alfred the Great, said royal historian Hugo Vickers. Danica Kirka, The Christian Science Monitor, 4 Feb. 2022 For some, endemicity entails a disease with stability, constancy. Jacob Stern, The Atlantic, 1 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'constancy.' 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 constancy

15th century, in the meaning defined at sense 1a

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Time Traveler for constancy

Time Traveler

The first known use of constancy was in the 15th century

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Dictionary Entries Near constancy

Constance, Lake



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Statistics for constancy

Last Updated

12 May 2022

Cite this Entry

“Constancy.” Dictionary, Merriam-Webster, Accessed 26 May. 2022.

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More Definitions for constancy


con·​stan·​cy | \ ˈkän-stən-sē How to pronounce constancy (audio) \

Kids Definition of constancy

: firmness and loyalty in beliefs or personal relationships

More from Merriam-Webster on constancy

Nglish: Translation of constancy for Spanish Speakers

Britannica English: Translation of constancy for Arabic Speakers


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