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

Synonyms & Similar Words

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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
  • Nothing Phone Nothing Phone Prime Day Deals The Nothing Phone (4a) combines a striking transparent aesthetic with a vibrant 120Hz AMOLED display and reliable daily performance.
    — Juhi Wadia, PC Magazine, 6 Oct. 2026
  • Tonight, the guy who has been most reliable, Chris Sale, is taking the mound for the Braves in this pivotal game.
    — David Troy OutKick, FOXNews.com, 6 Oct. 2026
Definition of reliable
Adjective
  • The outdoor second-floor deck is perfect for taking a break between museums—there's a table with complimentary coffee, fresh fruit, water, and seltzer available all day.
    — Condé Nast, Condé Nast Traveler, 4 Oct. 2026
  • Hotels, as well as airports, are perfect places to test this technology because their electricity usage follows quite predictable patterns.
    — New Atlas, New Atlas, 4 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
  • Small details are attended to with flawless execution—when the night is chilly, blankets appear at the dinner table; housekeeping and pool maintenance is timed so as not to interfere with your presence; transfers and shuttles are booked with ease.
    — Condé Nast, Condé Nast Traveler, 6 Oct. 2026
  • Not every film was flawless, but few actors have ever had a stronger run of hits.
    — Amy Nicholson, Los Angeles Times, 6 Oct. 2026
Definition of flawless
Adjective
  • More options means more styling potential, sure, but also more confusion.
    — Anna Moeslein, Glamour, 3 Oct. 2026
  • Schlichter, like others, wasn’t sure where the two men had come from.
    — ABC News, ABC News, 3 Oct. 2026
Definition of sure

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infallibility
infallible
infallibly
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Cite this Entry

“Infallible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infallible. Accessed 9 Oct. 2026.

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