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
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of infallible
An infallible dealmaker, resourceful problem-solver and filmmaker-friendly bon vivant, Ammar has played a pivotal, yet often behind-the-scenes role, in building cultural and cinematic bridges between Europe, the U.S. and the Arab world over the last 50 years.
—
Nick Vivarelli, Variety, 14 May 2025
While some think this specialized warrant is a new opportunity for justice, legal experts argue that DNA is not infallible — and this practice has the potential to violate the rights of suspects.
—Taylor Romine, CNN Money, 28 May 2025
In short: vibe coding is powerful, but not infallible.
—Josipa Majic Predin, Forbes.com, 18 May 2025
An infallible dealmaker, resourceful problem-solver and filmmaker-friendly bon vivant, Tarak Ben Ammar has played a pivotal, yet often behind-the-scenes role, in building cultural and cinematic bridges between Europe, the U.S. and the Arab world in last 50 years.
—Elsa Keslassy, Variety, 6 May 2025
See All Example Sentences for infallible
Nick Vivarelli, Variety, 14 May 2025
While some think this specialized warrant is a new opportunity for justice, legal experts argue that DNA is not infallible — and this practice has the potential to violate the rights of suspects.
—Taylor Romine, CNN Money, 28 May 2025
In short: vibe coding is powerful, but not infallible.
—Josipa Majic Predin, Forbes.com, 18 May 2025
An infallible dealmaker, resourceful problem-solver and filmmaker-friendly bon vivant, Tarak Ben Ammar has played a pivotal, yet often behind-the-scenes role, in building cultural and cinematic bridges between Europe, the U.S. and the Arab world in last 50 years.
—Elsa Keslassy, Variety, 6 May 2025
See All Example Sentences for infallible
Recent Examples of Synonyms for infallible
Adjective
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The numbers look sensational — his frightening physical profile and an unerring ability to thump a football immensely satisfying on the eye — but there are still burning questions.—
Thom Harris,
New York Times,
7 July 2025
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Incidentally, a good lead dog has an almost unerring sense of direction.—
Ted Updike,
Outdoor Life,
22 May 2025
Adjective
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One of his key issues remains securing clean, reliable water supplies for rural and tribal communities in need.—
Arlyssa D. Becenti,
AZCentral.com,
23 July 2025
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By the time Osbourne returned to Milwaukee for a March 5, 1984, concert at the Arena, his concerts had a reliable opening act: protesters outside the venue, criticizing Osbourne and rockers like him for performing the devil's music.—
Chris Foran,
jsonline.com,
23 July 2025
Adjective
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The other five pools offer a more serene atmosphere, perfect for a relaxing evening swim, with one just steps away from the rooms.—
Ronny Maye,
Forbes.com,
20 July 2025
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One of the town favorites, Mast General Store, got started in Western North Carolina in the 19th century and is still providing the area with outdoor goods and apparel perfect for adventures in WNC and beyond.—
Lisa Cericola,
Southern Living,
20 July 2025
Adjective
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Yesterday’s pangrams were gainful, unfailing and unflagging.—
Julia Jacobs,
New York Times,
19 May 2025
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She’s put off by his sweetness, his refusal to respond to her meanness and his unfailing encouragement, expressing pride in her tiniest recovery wins.—
David Rooney,
HollywoodReporter,
3 Sep. 2019
Adjective
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The illusion was flawless, the synchronization perfect.—
Luciana Cemerka,
Forbes.com,
22 July 2025
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Any robotaxi service, Waymo included, needs to be virtually flawless in order to scale the service safely—yet with Tesla there’s no sign of that, according to Martinez.—
Christiaan Hetzner,
Fortune,
20 July 2025
Adjective
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Not sure how to get around Austin for the MLS All-Star match?—
Marley Malenfant,
Austin American Statesman,
24 July 2025
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Not sure why, but its order outlook is far worse than thought.—
Jim Cramer,
CNBC,
23 July 2025
Cite this Entry
“Infallible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infallible. Accessed 3 Aug. 2025.
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