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Synonyms

inconsistent

American  
[in-kuhn-sis-tuhnt] / ˌɪn kənˈsɪs tənt /

adjective

  1. lacking in harmony between the different parts or elements; self-contradictory.

    an inconsistent story.

    Synonyms:
    incoherent
  2. lacking agreement, as one thing with another or two or more things in relation to each other; at variance.

    a summary that is inconsistent with the previously stated facts.

    Synonyms:
    irreconcilable, discrepant
  3. not consistent in principles, conduct, etc..

    He's so inconsistent we never know if he'll be kind or cruel.

  4. acting at variance with professed principles.

  5. Logic. incompatible.


inconsistent British  
/ ˌɪnkənˈsɪstənt /

adjective

  1. lacking in consistency, agreement, or compatibility; at variance

  2. containing contradictory elements

  3. irregular or fickle in behaviour or mood

  4. Also: incompatiblemaths (of two or more equations) not having one common set of values of the variables: x + 2 y = 5 and x + 2 y = 6 are inconsistent

  5. logic (of a set of propositions) enabling an explicit contradiction to be validly derived

"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

Related Words

Inconsistent, incompatible, incongruous refer to things that are out of keeping with each other. That which is inconsistent involves variance, discrepancy, or even contradiction, especially from the point of view of truth, reason, or logic: His actions are inconsistent with his statements. Incompatible implies incapability of close association or harmonious relationship, as from differences of nature, character, temperament, and the like: actions incompatible with honesty of purpose; qualities that make two people incompatible. Something that is incongruous is inappropriate or out of keeping, often to the point of being ridiculous or absurd: Incongruous characters or situations frequently provide a basis for comedy.

Other Word Forms

  • inconsistently adverb

Etymology

Origin of inconsistent

First recorded in 1640–50; in- 3 + consistent

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.

Days later, he said it was a position he took "with regret" because the strikes appeared "inconsistent with international law".

From BBC

Others may have felt that it was inconsistent with the way other countries have since avoided sanctions for alleged breaches of international law.

From BBC

Between the end of the last T20 World Cup in 2024 and the start of this, India won 33 of their 41 matches making them the most consistent team cricket's most inconsistent format has seen.

From BBC

State records show that in 2024 the county violated rules by submitting data that was “incomplete, inaccurate, or inconsistent.”

From Los Angeles Times

Last Sunday’s debacle in an uninspiring and ugly loss to a higher-seeded, more aggressive, more talented and more balanced Celtics team seemed to expose all the flaws that plague this struggling and inconsistent Lakers team.

From Los Angeles Times