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Synonyms & Antonyms of infallible
1
not being or likely to be wrong
- a teacher with an infallible memory for names
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2
not likely to fail
- an infallible cure for hiccups
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“Infallible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infallible. Accessed 12 Jun. 2021.
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The first known use of infallible was in the 15th century
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