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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
  • With unpredictable twists and emotions running high, this Halloween is especially chaotic, and Mutable signs — Gemini, Virgo, Sagittarius and Pisces — can't imagine what's in store.
    Valerie Mesa, PEOPLE, 31 Oct. 2025
  • Predicting something that has becoming increasingly unpredictable is an impossible task, but here’s a look at how the shutdown could ripple through critical avenues of everyday life.
    Alicia Wallace, CNN Money, 31 Oct. 2025
Adjective
  • Cheaper options or knock-offs tend to come with flimsy sockets, buzzing ballasts, or unreliable switches, which can make rooms look cheap or dated far sooner than expected and even create fire hazards.
    Lauren Bengtson, Better Homes & Gardens, 25 Oct. 2025
  • More than a year post-merger, Six Flags still operates over 10 different apps, and even basic transactions like purchasing a season pass on the website have been unreliable, so modernizing and streamlining this technology could go a long way.
    Kenneth Squire, CNBC, 24 Oct. 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
  • Several residents who work in the Georgia King Village area weighed in on the incident, including Harriette Guity, who told News12 that false reports based on AI could stretch first responders thin.
    Kimberlee Speakman, PEOPLE, 25 Oct. 2025
  • Archaeologists concluded the structure was actually a false tomb, or a cenotaph, a type of burial monument erected to honor a deceased person buried elsewhere.
    Aspen Pflughoeft, Miami Herald, 24 Oct. 2025
Adjective
  • Tailless designs are inherently unstable, and thrust vectoring can maximize performance across the flight envelope, including at high altitudes, the report noted.
    Bojan Stojkovski, Interesting Engineering, 2 Nov. 2025
  • New refugees continue to arrive every day as conditions in South Sudan remain unstable.
    Fatma Tanis, NPR, 2 Nov. 2025
Adjective
  • An experienced hiker from San Diego attempting to climb the tallest peak in the contiguous United States has fallen to his death amid treacherous winter conditions, leaving his two young sons and family in shock and grief.
    Amanda Lee Myers, USA Today, 31 Oct. 2025
  • Subtitled Into the Grand Line, the next arc will see the Straw Hats enter the treacherous expanse of water called the Grand Line and visit various locations in and around this territory.
    Nick Romano, Entertainment Weekly, 28 Oct. 2025

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Cite this Entry

“Inconstant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/inconstant. Accessed 6 Nov. 2025.

Last Updated: - Updated example sentences
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