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
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of infallible
Holding the two halves together builds something that neither half could make alone, and treating either as infallible turns them into engines for manufacturing enemies and alienating friends.
—
Robert T.f. Downes, Hartford Courant, 6 Jan. 2026
Experts are not infallible, science evolves, new facts emerge.
—Bill Goodykoontz, AZCentral.com, 6 Jan. 2026
From the mysterious East, now comes Carrnac the Magnificent with his infallible predictions for the New Year, 2026.
—Howie Carr, Boston Herald, 31 Dec. 2025
Israeli leaders are hardly infallible in their judgments, including about developments in their own region.
—Andrew P. Miller, Foreign Affairs, 5 Dec. 2025
See All Example Sentences for infallible
Robert T.f. Downes, Hartford Courant, 6 Jan. 2026
Experts are not infallible, science evolves, new facts emerge.
—Bill Goodykoontz, AZCentral.com, 6 Jan. 2026
From the mysterious East, now comes Carrnac the Magnificent with his infallible predictions for the New Year, 2026.
—Howie Carr, Boston Herald, 31 Dec. 2025
Israeli leaders are hardly infallible in their judgments, including about developments in their own region.
—Andrew P. Miller, Foreign Affairs, 5 Dec. 2025
See All Example Sentences for infallible
Recent Examples of Synonyms for infallible
Adjective
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So the head golf pro there needs to not only know the game and its rules, but also must have the unerring instincts of an excellent cruise director combined with an air traffic controller.—
Scott Fowler,
Charlotte Observer,
6 Feb. 2026
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Aaronson’s finishes were unerring and clinical.—
Beren Cross,
New York Times,
8 Jan. 2026
Adjective
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And while Quinnen Williams and Kenny Clark serve as one of the better defensive tackle duos in the league and Otito Ogbonnia provides reliable depth, having another quality, reliable player in the middle may end up being necessary as well.—
Nick Harris,
Fort Worth Star-Telegram,
17 Mar. 2026
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With increasing demand for modern defense systems worldwide, investments like this expansion are considered essential for maintaining reliable production and supply.—
Prabhat Ranjan Mishra,
Interesting Engineering,
16 Mar. 2026
Adjective
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Don’t worry too much about things being perfect, either.—
Tarot.com,
Sun Sentinel,
19 Mar. 2026
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Ahead, 20 properties to book for your next postcard-perfect getaway.—
Nicole Kliest,
Vogue,
19 Mar. 2026
Adjective
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The young monarch is thought to have spent an hour alone before taking up her duties with the unfailing stoicism that would come to define her historic reign.—
Hope Coke,
Vanity Fair,
7 Feb. 2026
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And her unfailing ability to give the perfect little sardonic wink and nod extends beyond her social media content and even beyond her impeccable performances in projects like Netflix's Too Much.—
Meg Walters,
InStyle,
4 Jan. 2026
Adjective
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Fittingly, her goddess braids, done by hairstylist Coree Moreno using Bellami extensions, looked flawless.—
Kara Jillian Brown,
InStyle,
16 Mar. 2026
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Chandran's skin, prepped by Joanna Czech with the Swiss Perfection collection, served as a flawless canvas for her makeup, composed of gorgeous shades of honey and brown that work with absolutely anything—but especially her gorgeous, green gown.—
Marci Robin,
Allure,
15 Mar. 2026
Adjective
-
Hadi and his friends were not sure what to expect from the holiday.—
Cora Engelbrecht,
New Yorker,
20 Mar. 2026
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Cohen wasn’t sure exactly when Ramos got his cancer diagnosis.—
ABC News,
ABC News,
19 Mar. 2026
Cite this Entry
“Infallible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infallible. Accessed 23 Mar. 2026.
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