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Synonym Chooser

How does the adjective inconstant differ from other similar words?

Some common synonyms of inconstant are capricious, fickle, mercurial, and unstable. While all these words mean "lacking firmness or steadiness (as in purpose or devotion)," inconstant implies an incapacity for steadiness and an inherent tendency to change.

an inconstant friend

When could capricious be used to replace inconstant?

The meanings of capricious and inconstant largely overlap; however, capricious suggests motivation by sudden whim or fancy and stresses unpredictability.

an utterly capricious critic

Where would fickle be a reasonable alternative to inconstant?

While in some cases nearly identical to inconstant, fickle suggests unreliability because of perverse changeability and incapacity for steadfastness.

performers discover how fickle fans can be

When can mercurial be used instead of inconstant?

While the synonyms mercurial and inconstant are close in meaning, mercurial implies a rapid changeability in mood.

made anxious by her boss's mercurial temperament

When would unstable be a good substitute for inconstant?

The words unstable and inconstant can be used in similar contexts, but unstable implies an incapacity for remaining in a fixed position or steady course and applies especially to a lack of emotional balance.

too unstable to hold a job

Example Sentences

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.
Recent Examples of inconstant If the United States is an unreliable partner and a source of chaos these countries will turn elsewhere, building new security and trade alliances that don’t depend on the inconstant, waning superpower. Lydia Polgreen, Mercury News, 27 May 2025 Much like a patient who fails to finish a course of antibiotics, inconstant policies may incur all the costs and none of the benefits. David Carlin, Forbes, 24 Mar. 2025 Energy experts have been warning that electricity is likely to get more expensive and less reliable unless renewable power that waxes and wanes under inconstant sunlight and wind is backed up by generators that can run whenever needed. IEEE Spectrum, 9 May 2024 The key finding is that as the distance grows greater, the coupling stops growing, and the inconstant constant becomes constant once more. Stanley J. Brodsky, Scientific American, 16 Apr. 2024 See All Example Sentences for inconstant
Recent Examples of Synonyms for inconstant
Adjective
  • First, the electrodes and electrolytes are adjusted to handle high temperatures, specifically replacing the volatile liquid electrolyte used in traditional Li batteries.
    Mrigakshi Dixit, Interesting Engineering, 5 Nov. 2025
  • Taking the long view Many finance leaders remain cautious, viewing bitcoin as too volatile—especially recently—compared to traditional assets.
    Sheryl Estrada, Fortune, 4 Nov. 2025
Adjective
  • Clarisse looks intimidating climbing out of a boat, as does Bushnell’s traitorous Luke, who wields a sharp-looking knife.
    Dessi Gomez, Deadline, 24 July 2025
  • There's a delicious whodunit aspect to it, too, as the list of five potentially traitorous suspects includes the operative's own high-profile wife (Cate Blanchett).
    Brian Truitt, USA Today, 4 July 2025
Adjective
  • This combination allows for precise navigation in tight or unpredictable environments.
    Aamir Khollam, Interesting Engineering, 7 Nov. 2025
  • Tinker was brilliant, unpredictable, and slightly unhinged.
    Henry Selick, IndieWire, 6 Nov. 2025
Adjective
  • Additionally, infrastructure already weakened by previous flooding may be increasingly unreliable.
    Robert Birsel, MSNBC Newsweek, 6 Nov. 2025
  • The overwhelming majority of experts dispute that torture actually works as an interrogation technique, arguing that any information that comes out of it is unreliable as people under duress will say anything needed to convince their torturers to stop.
    Ellen Mitchell, The Hill, 5 Nov. 2025
Adjective
  • Rigorous, blustery winter; winding sleety spring; hot, moist enervating summer; changeful autumn with its dog-days; these are absolutely unknown.
    San Diego Union-Tribune, San Diego Union-Tribune, 1 Jan. 2023
  • Hers is the kind of face that inspires directors to tight framing — gleaming, as if smoothed from marble, and yet somehow pliant, changeful.
    Jordan Kisner Jack Davison, New York Times, 11 Oct. 2022
Adjective
  • The title-winning standard has been lower in recent years; City won it with 86, 93, 89 and 91 points between 2020-21 and 2023-24 and Liverpool with 84 points last season, but some of those totals give a false impression.
    Oliver Kay, New York Times, 8 Nov. 2025
  • The month prior, she was sentenced to one year and nine months in prison for using marijuana while owning a firearm and making false statements about drug use, per the newspaper.
    Christopher Rudolph, PEOPLE, 8 Nov. 2025
Adjective
  • On the big screen, Harford cared for Sandra Dee’s Rosalie Stocker in The Wild and the Innocent (1959) and portrayed the opportunistic older sister of Natalie Wood’s unstable title character in Inside Daisy Clover (1965), the melodrama directed by Robert Mulligan.
    Mike Barnes, HollywoodReporter, 9 Nov. 2025
  • Despite the improvements, her health has still been unstable over the years, partially due to her diagnosis of pulmonary vein stenosis, a rare disease that narrows the veins connecting the heart and the lungs, her father told the outlet.
    Kimberlee Speakman, PEOPLE, 7 Nov. 2025
Adjective
  • Residents who live in the snow belts should prepare for treacherous driving conditions and near-zero visibility at times through early Tuesday.
    Joe Edwards, MSNBC Newsweek, 10 Nov. 2025
  • As the first snowstorm of the season fell throughout the province of Ontario, Atletico Ottawa and Cavalry FC competed through treacherous snow and blizzard-like conditions in front of 13,132 fans, making for a remarkable Canadian Premier League Final.
    Joshua Kloke, New York Times, 10 Nov. 2025

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Cite this Entry

“Inconstant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/inconstant. Accessed 13 Nov. 2025.

Last Updated: - Updated example sentences
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