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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Affordable yet reliable, the JBL Vibe Beam wireless earbuds are terrific for listening to your favorite tunes while commuting, hiking, exercising or at the beach.—
BestReviews,
Chicago Tribune,
30 Mar. 2026
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However, there is a reliable method for keeping crows out of your yard and letting the others live in peace.—
Joan Morris,
Mercury News,
30 Mar. 2026
Adjective
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Dallas’ health inspections function on a 100-point system, with a score of 100 considered perfect and anything below 70 considered failing.—
Lillie Davidson,
Fort Worth Star-Telegram,
25 Mar. 2026
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Their goal was to play a note-perfect rendition of Pet Sounds along with classic Beach Boys hits on the tribute-band circuit.—
Andy Greene,
Rolling Stone,
25 Mar. 2026
Adjective
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His unfailing commitment to civilian authority gave time for government institutions to sink roots, and established norms that gelled into the professional ethos of our military today.—
Kori Schake,
The Atlantic,
22 Mar. 2026
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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
Adjective
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This, plus tanking penalties, feels nearly flawless.—
Zach Harper,
New York Times,
30 Mar. 2026
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Imanaga will give up home runs as a fly ball pitcher, so living to fight another day is more valuable than trying to be flawless.—
Andy Martinez,
Chicago Tribune,
29 Mar. 2026
Adjective
-
Cheap, sure, but not exactly free.—
Evan Moore,
Charlotte Observer,
26 Mar. 2026
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This, coupled with your personal drive and ability to impress authority figures, is a sure-fire combination for success.—
Georgia Nicols,
Denver Post,
26 Mar. 2026
Cite this Entry
“Infallible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infallible. Accessed 2 Apr. 2026.
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