infallible

adjective

(ˌ)in-ˈfa-lə-bəl How to pronounce infallible (audio)
Definition of infalliblenext
1
as in unerring
not being or likely to be wrong a teacher with an infallible memory for names

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Antonyms & Near Antonyms
2
as in reliable
not likely to fail an infallible cure for hiccups

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of infallible These words are also coming from a former priest, a man the world is taught to believe is infallible simply because of his profession. — Whitney Friedlander, Variety, 6 Aug. 2026 Bash, Tapper, CNN and many others treated Fauci as an infallible god. — Ian Miller Outkick, FOXNews.com, 3 Aug. 2026 Not that the Coastal Commission has been infallible over the years. — Steve Lopez, Los Angeles Times, 11 July 2026 Both experts acknowledged that the tests are not infallible, can’t determine exactly when DNA was left on an item, and can't confirm the source of DNA with absolute certainty. — N'dea Yancey-Bragg, USA Today, 10 July 2026 See All Example Sentences for infallible
Recent Examples of Synonyms for infallible
  1. unerring
  2. reliable
  3. perfect
  4. unfailing
  5. flawless
  6. sure
Adjective
  • My admiration extends to the unerring precision of their filmmaking.
    — Justin Chang, NPR, 2 Oct. 2026
  • Voiced by Tom Kenny, SpongeBob’s unerring positivity and childlike glee immediately captured our hearts and minds, so much so that the show has continued for more than 25 years.
    — Declan Gallagher, Entertainment Weekly, 10 Sep. 2026
Definition of unerring
Adjective
  • However, reliable control and readout remain essential requirements for practical applications.
    — Neetika Walter, Interesting Engineering, 28 Oct. 2026
  • While no real fans will turn off their NFL games because of some broadcast booth drama, the entire situation is a rare speed bump for what is otherwise the most reliable bet in all of TV.
    — Alex Weprin, HollywoodReporter, 27 Oct. 2026
Definition of reliable
Adjective
  • The loss spelled the end of the Chiefs’ perfect 5-0 start to the season.
    — Jeff Rosen, Kansas City Star, 26 Oct. 2026
  • Sheet cake recipes are the easiest way to feed dessert to a crowd, meaning this recipe is perfect for the holidays.
    — Mary Shannon Wells, Southern Living, 25 Oct. 2026
Definition of perfect
Adjective
  • Everything is infused with melancholy, the unfailing indicator of the fundamental rift between humans and their natural environment.
    — Literary Hub, Literary Hub, 11 Aug. 2026
  • Their reach was owed not just to the nine-member unit’s technical excellence and versatility but also their endless supply of positivity, of psychedelic Black power characterized by its leader’s unfailing belief in a beautiful tomorrow.
    — Craig Jenkins, Vulture, 9 June 2026
Definition of unfailing
Adjective
  • The results suggested that people who strongly preferred flawless items had more elaborate ideas about what their ideal product was and were sensitive to even small deviations from those ideas.
    — Aprajita Gautam, The Conversation, 20 Oct. 2026
  • Florida wasn’t flawless up front, committing multiple false starts on a day when Sumrall’s team had 55 yards on seven penalites.
    — Edgar Thompson, The Orlando Sentinel, 18 Oct. 2026
Definition of flawless
Adjective
  • Meanwhile, the centrists are not sure where to situate themselves.
    — Isaac Chotiner, New Yorker, 23 Oct. 2026
  • The mini-motorhome also comes with plenty of features sure to make your next road trip more comfortable.
    — Bryan Hood, Robb Report, 23 Oct. 2026
Definition of sure

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Cite this Entry

“Infallible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infallible. Accessed 28 Oct. 2026.

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