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
2
: a state of being constant or unchanging

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.
Across cultures and eras, the Moon has symbolized constancy, the comforting cycle of tides, months, fertility, and agriculture. Alan Bradley, Space.com, 2 Mar. 2026 We were just stunned by my idiotic behavior, but that idea that of the constancy was suddenly were wiped. Jazz Tangcay, Variety, 2 Mar. 2026 Captain America’s ethical constancy then became a dramatic foil for conflict over how a hero should conduct themselves in the modern globalized world. Literary Hub, 27 Feb. 2026 His constancy has been really good and his leadership. Matt Schooley, CBS News, 12 Jan. 2026 See All Example Sentences for constancy

Word History

First Known Use

1523, in the meaning defined at sense 1a

Time Traveler
The first known use of constancy was in 1523

Browse Nearby Words

Cite this Entry

“Constancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/constancy. Accessed 9 Mar. 2026.

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

More from Merriam-Webster on constancy

Last Updated: - Updated example sentences
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