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Synonyms

inconsistency

American  
[in-kuhn-sis-tuhn-see] / ˌɪn kənˈsɪs tən si /
Also inconsistence

noun

  • inconsistencies
    plural
  1. the quality or condition of being inconsistent.

  2. an inconsistent thing, action, remark, etc.


inconsistency British  
/ ˌɪnkənˈsɪstənsɪ /

noun

  1. lack of consistency or agreement; incompatibility

  2. an inconsistent feature or quality

  3. logic

    1. the property of being inconsistent

    2. a self-contradictory proposition

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of inconsistency

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

Explanation

When there's inconsistency, things are not the same. An example of inconsistency in parenting might be when parents give different allowances to kids who are the same age. There's a lot of inconsistency in the world. Some restaurants will serve delicious food most of the time, but not all the time. Teachers in different classes will have different rules for what is expected. Another type of inconsistency is between ideas or propositions. For example, if you want to lose weight but cannot stop eating donuts, there is a major inconsistency between those two ideas. Anywhere you find things that are changing or varying, there is inconsistency.

Keep Reading on Vocabulary.com

Vocabulary lists containing inconsistency

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:

He gave up six runs in 5⅓ innings, raising concerns again over his inconsistency.

From Los Angeles Times Jul. 21, 2026

The court found an inconsistency in Ryan's evidence over whether he had grabbed or only touched Ms Gordon's wrists.

From BBC Jul. 14, 2026

The detective noted the inconsistency, which Bušić attributed to not sleeping for “four or five days.”

From Slate Jul. 7, 2026

Justice Barrett agreed, highlighting the inconsistency between the two cases: “How can history support both a categorical rule and a carveout?”

From The Wall Street Journal Jul. 6, 2026

There’s an inconsistency, a ghost in this story.

From "Educated" by Tara Westover

But new allegations and inconsistencies continued to surface.

From The Wall Street Journal Aug. 14, 2026

"I feel these inconsistencies do not make a difference to education and are really blinkered."

From BBC Aug. 10, 2026

The senator knew there would likely be inconsistencies between Fauci’s memory and what he wrote at the time.

From Salon Aug. 1, 2026

Once clouds were included, the strange inconsistencies disappeared.

From Science Daily Jun. 28, 2026

She pointed out three areas with inconsistencies, and made a document for Pattie to use when she next met with the landlord.

From "Counting by 7s" by Holly Goldberg Sloan

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