1 infallibility | Definition of infallibility

infallible

adjective
in·​fal·​li·​ble | \ (ˌ)in-ˈfa-lə-bəl How to pronounce infallible (audio) \

Definition of infallible

1 : incapable of error : unerring an infallible memory
2 : not liable to mislead, deceive, or disappoint : certain an infallible remedy
3 : incapable of error in defining doctrines touching faith or morals

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Other Words from infallible

infallibility \ (ˌ)in-​ˌfa-​lə-​ˈbi-​lə-​tē How to pronounce infallibility (audio) \ noun
infallibly \ (ˌ)in-​ˈfa-​lə-​blē How to pronounce infallibly (audio) \ adverb

Synonyms & Antonyms for infallible

Synonyms

unerring, unfailing

Antonyms

fallible

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Did You Know?

Watch out when you hear about infallible predictions, an infallible plan, an infallible cure, or even infallible lip gloss. Infallible isn't a claim that scientists, engineers, and doctors like to make, so you're probably getting better information when the word not comes first. You may have heard the phrase "papal infallibility", which refers to the official position of the Roman Catholic church, adopted in the 19th century, that certain solemn statements made by a Pope about faith or morals were not to be questioned. Popes since then have been careful not to make many of these statements.

Examples of infallible in a Sentence

I never claimed to be infallible. There is no infallible remedy to these problems.

Recent Examples on the Web

To suggest Disney is infallible while Sony is incompetent is a level of corporate investment that feels gross. Richard Newby, The Hollywood Reporter, "How 'Spider-Man' Divorce Shows Ugly Side of Fandom," 22 Aug. 2019 Falling corporate profitability is considered a strong, though not infallible, indicator of an approaching recession. Stephen Gandel, CBS News, "Fading corporate profits heighten U.S. recession fears," 22 Aug. 2019 While these sorts of statements are usually infallible in their ability to induce groans from the team's supporters, there is undeniable credence to Klopp's claims. SI.com, "Premier League Fantasy Football: 10 Under the Radar Picks for Your 2019/20 Squad," 25 July 2019 There is, however, no great and infallible arbiter of literary merit. Hermione Hoby, The New Yorker, "What Does It Mean to Be a “Real” Writer?," 3 July 2019 Then, as now, this was no mean feat; after all, previous bishops of Rome had rarely been as infallible as later dogma insisted. The Economist, "The most scandalous popes in history," 29 June 2019 Even if validated by research, no forensic test is infallible, Stern said. Christian Sheckler, ProPublica, "The Questionable Conviction, and Re-Conviction, of Ricky Joyner," 20 July 2019 The fake McGuckin was the highlight of the evening and was infallible. Richard Morin, azcentral, "Minor League Baseball team invites negative online reviewer to 'Helen McGuckin Night'," 11 July 2019 Juries aren’t infallible, and due process does not always result in perfect justice, but no nation is truly free without this vital check on the power of the state. David French, National Review, "Navy SEAL Eddie Gallagher’s Acquittal Reminds Us to Never Rush to Judgment," 3 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'infallible.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of infallible

15th century, in the meaning defined at sense 1

History and Etymology for infallible

Middle English, from Medieval Latin infallibilis, from Latin in- + Late Latin fallibilis fallible

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More Definitions for infallible

infallible

adjective

English Language Learners Definition of infallible

: not capable of being wrong or making mistakes : not fallible
: certain to work properly or succeed

infallible

adjective
in·​fal·​li·​ble | \ in-ˈfa-lə-bəl How to pronounce infallible (audio) \

Kids Definition of infallible

1 : not capable of being wrong an infallible memory
2 : certain to succeed : sure an infallible remedy

Other Words from infallible

infallibly \ -​blē \ adverb

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