fallible

adjective

fal·​li·​ble ˈfa-lə-bəl How to pronounce fallible (audio)
1
: liable to be erroneous
a fallible generalization
2
: capable of making a mistake
we're all fallible
fallibly adverb

Did you know?

Humanum est errare” is a Latin expression that translates as “To err is human.” Of course, cynics might say that it is also human to deceive. The history of the word fallible simultaneously recognizes both of these character flaws. In modern usage, fallible refers to one’s ability to make mistakes, but it descends from the Latin verb fallere, which means “to deceive.” Fallible has been used to describe the potential for error since at least the 15th century. Other descendants of fallere in English, all of which actually predate fallible, include fallacy (the earliest, now obsolete, meaning was “guile, trickery”), fault, false, and even fjail. Whoops, we mean fail.

Examples of fallible in a Sentence

Recent Examples on the Web
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But the weakness of American democracy is also in those words … because the people are fallible. Tracy Brown, Los Angeles Times, 10 June 2025 Nuclear deterrence is an enterprise that requires the involvement of fallible, human organizations. Joshua Keating, Vox, 27 May 2025 Still, cotton mixing during processing is common, with such certifications highly fallible to errors and fraud. Brooke Roberts-Islam, Forbes.com, 10 Apr. 2025 However, human capabilities, like making moral judgments, and using ... Post AI’s rapid advancement has ignited enthusiasm about its potential to revolutionize corporate decision-making by substituting for expensive, fallible humans. Martin Reeves, Harvard Business Review, 11 Dec. 2024 See All Example Sentences for fallible

Word History

Etymology

Middle English, from Medieval Latin fallibilis, from Latin fallere

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of fallible was in the 15th century

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Cite this Entry

“Fallible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fallible. Accessed 18 Jun. 2025.

Kids Definition

fallible

adjective
fal·​li·​ble ˈfal-ə-bəl How to pronounce fallible (audio)
: capable of making a mistake or being wrong
fallibility
ˌfal-ə-ˈbil-ət-ē
noun
fallibly adverb

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