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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 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 In March, Johnson ordered the first national lockdown, caught COVID, and later spent three nights in the I.C.U. For months, the country staggered from one set of restrictions to the next—a reflection of Johnson’s inconstant attitude toward the virus. Sam Knight, The New Yorker, 25 Mar. 2024 See All Example Sentences for inconstant
Recent Examples of Synonyms for inconstant
Adjective
  • Yet last week’s warning from Jet2, a business respected for its cost control and excellent customer service, has served as a reminder that, for all the impressive growth of recent years, this remains a volatile and sometimes unpredictable sector.
    Ian King, CNBC, 10 Sep. 2025
  • While any single month can be volatile and revisions can further change our understanding, hiring ground to a halt in May and June in the uncertain aftermath of the Liberation Day tariff announcements.
    Jeffrey Schulze, Forbes.com, 10 Sep. 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
  • Charleston’s unpredictable climate means summer can stretch well into October, then randomly resurface in January.
    Jenn Rice, Forbes.com, 12 Sep. 2025
  • With recent polls showing Mamdani leading his rivals by double digits, the intersection of Hochul’s pragmatism, Mamdani’s outreach, and the powerful symbolism of their evolving relationship promises a uniquely unpredictable contest for New York’s future.
    Nick Lichtenberg, Fortune, 12 Sep. 2025
Adjective
  • This approach is unreliable because the proxy materials, like volcanic rock, might have been changed by geological processes or created long after the eggs were laid, resulting in incorrect age estimates.
    Mrigakshi Dixit, Interesting Engineering, 11 Sep. 2025
  • Everyone knew taxis were an unreliable and largely unlovable service.
    David Malcolm, Forbes.com, 11 Sep. 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 false assurance was more than a slip.
    Eric Tucker, Twin Cities, 13 Sep. 2025
  • Robinson, the founder of the now-defunct anti-immigration English Defence League (EDL), was released from prison earlier this year, having been jailed for being in contempt of court by repeating false accusations about a Syrian refugee.
    Catherine Nicholls, CNN Money, 13 Sep. 2025
Adjective
  • The situation at home was unstable.
    Rebecca Mead, New Yorker, 8 Sep. 2025
  • Companies that lean too far in one direction risk either frustrating users with delays or damaging trust with unstable or inaccurate outputs.
    Expert Panel®, Forbes.com, 8 Sep. 2025
Adjective
  • Arriving home in the dark after work or dinners out is inevitable, but finding the front door doesn’t have to be a treacherous experience for you or your guests.
    Maggie Horton, PEOPLE, 8 Sep. 2025
  • On the other hand, Will — played with a jagged sensitivity by Paul Mescal, making the most of his sad-eyed charisma and physical presence — is a guy who feels more at home at a desk, with only a candle to light his way through the treacherous creative process.
    David Fear, Rolling Stone, 8 Sep. 2025

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Cite this Entry

“Inconstant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/inconstant. Accessed 15 Sep. 2025.

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