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Synonyms

inconstant

American  
[in-kon-stuhnt] / ɪnˈkɒn stənt /

adjective

  1. not constant; changeable; fickle; variable.

    an inconstant friend.

    Synonyms:
    volatile, mercurial, mutable, uncertain, unsettled, unstable, undependable, vacillating, capricious, moody
    Antonyms:
    steady

inconstant British  
/ ɪnˈkɒnstənt /

adjective

  1. not constant; variable

  2. fickle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

See fickle.

Other Word Forms


Etymology

Origin of inconstant

First recorded in 1375–1425; late Middle English, from Latin inconstant- (stem of inconstāns ) “changeable.” See in- 3, constant


Explanation

Anything that's inconstant changes all the time. Don’t give your heart to an inconstant friend because she might get distracted and drop it. The moon is inconstant, with all that waxing and waning, but we love it anyway. You can't exactly count on things — or people — that are inconstant, since they vary or waver so much. Someone who's inconstant is fickle or even undependable. An inconstant friend might promise to come to your party and then fail to show up because she suddenly felt like going bowling instead. When the weather is inconstant, you don’t know what to wear. The Latin root is inconstantem, "changeable or capricious."

Keep Reading on Vocabulary.com

Vocabulary lists containing inconstant

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“O, swear not by the moon, th’ inconstant moon / That monthly changes in her circle orb / Lest that thy love prove likewise variable,” Juliet warned Romeo.

From Los Angeles Times ● Jun. 3, 2026

I imagine that younger fans ardently connect Glinda and Elphaba's inconstant relationship to the ups and downs of their own.

From Salon ● Dec. 2, 2024

All around them, the Byzantine emperors saw inconstant allies and ferocious enemies.

From Textbooks ● Apr. 19, 2023

The cold, inconstant glimmer made Lyra feel uneasy.

From Slate ● Jun. 10, 2019

Cora spoke of her mother, Mabel, who absconded one day and left her to the inconstant mercy of the world.

From "The Underground Railroad: A Novel" by Colson Whitehead

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