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See more synonyms for infallibility on Thesaurus.com
  1. Sometimes in·fal·li·ble·ness. the quality of being infallible, or of being absolutely trustworthy: He believed in the infallibility of his leadership.
  2. Roman Catholic Church. immunity from fallacy or liability to error in expounding matters of faith or morals by virtue of the promise made by Christ to the Church: papal infallibility.
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Origin of infallibility

Related formsnon·in·fal·li·bil·i·ty, nounnon·in·fal·li·ble·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

safety, faithfulness, dependability, supremacy, impeccability

Examples from the Web for infallibility

Contemporary Examples

Historical Examples

  • "That's a reputation for infallibility worth having," he observed.


    Joseph C. Lincoln

  • There can be no better account of the Infallibility of the Church.

    Apologia Pro Vita Sua

    John Henry Cardinal Newman

  • They did not believe either in verbal inspiration or in Biblical infallibility.

  • You must relieve him of his infallibility if you want him to act like a sensible man.

  • It could only be refuted by doubting the infallibility of the Scripture itself.


    Henry Peterson

Word Origin and History for infallibility


1610s, from Medieval Latin infallibilitas, from infallibilis (see infallible).

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Online Etymology Dictionary, © 2010 Douglas Harper