constancy

noun

con·​stan·​cy ˈkän(t)-stən(t)-sē How to pronounce constancy (audio)
plural constancies
Synonyms of constancynext
1
a
: steadfastness of mind under duress : fortitude
b
: fidelity, loyalty
2
: a state of being constant or unchanging

Synonyms

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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
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.
Debra Messing, who has produced a new documentary on (horseshoe-theory) antisemitism called October 8, has been one of Hollywood’s few intensely admirable exceptions, calling out anti-Jewish hatred with a fierce constancy over the past 16 months. — Steven Zeitchik, The Hollywood Reporter, 1 Mar. 2025 In the 1940s scientists realized this cosmic constancy could be used to measure time without the chaotic noise associated with other physical clocks. — Allison Parshall, Scientific American, 11 Sep. 2024 Our second table has a higher hurdle for constancy of growth: All these land in the top decile of the universe in predictability of the earnings progression. — William Baldwin, Forbes, 3 Sep. 2024 With this new distance dependence from quantum loops lodged within the coupling constant, these quantities lost their constancy. — Stanley J. Brodsky, Scientific American, 16 Apr. 2024 See All Example Sentences for constancy

Word History

First Known Use

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

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

Rhymes for constancy

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Cite this Entry

“Constancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/constancy. Accessed 25 Mar. 2025.

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Kids Definition

constancy

noun
con·​stan·​cy ˈkän(t)-stən-sē How to pronounce constancy (audio)
plural constancies
1
: firmness and loyalty in one's beliefs or personal relationships
2
: freedom from change

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