\ ˈfȯl-tē How to pronounce faulty (audio) \
faultier; faultiest

Definition of faulty

: marked by fault or defect : imperfect

Other Words from faulty

faultily \ ˈfȯl-​tə-​lē How to pronounce faulty (audio) \ adverb
faultiness \ ˈfȯl-​tē-​nəs How to pronounce faulty (audio) \ noun

Synonyms & Antonyms for faulty



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Examples of faulty in a Sentence

the cause of the plane crash was traced to faulty wiring
Recent Examples on the Web Ex-Theranos patients testified against the health tech company for providing faulty test results. Mahnoor Khan, Fortune, 4 May 2022 After members of Congress and privacy specialists protested that biometrics can be faulty and have dangerous consequences, the company made the selfie requirement optional for users who have a video interview. Laura Saunders, WSJ, 29 Apr. 2022 That typo symbolized a U.S. tax filing system that is faulty, with a weary staff shouldering an enormous workload. Washington Post, 16 Apr. 2022 Still, even if Manchin’s logic is faulty, his political power is secure. John Cassidy, The New Yorker, 2 Apr. 2022 There have been multiple times in recent American history -- for example, before the US invasion of Iraq in 2003, when US intelligence assessments have proven to be faulty. Stephen Collinson, CNN, 1 Apr. 2022 Finkelstein and others countered that her dating was faulty and that the structure might have been built by Canaanites—a mix of ethnic groups who inhabited the Levant 3,000 years ago—long before David was supposed to have lived. Andrew Lawler, Scientific American, 1 Apr. 2022 The problem is: most of the explainable A.I. methods these companies are selling are faulty. Jeremy Kahn, Fortune, 22 Mar. 2022 And like human brains, AI platforms can be susceptible to being fed faulty information, including by attackers seeking to manipulate them. Richard Vanderford, WSJ, 22 Mar. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'faulty.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of faulty

14th century, in the meaning defined above

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Time Traveler for faulty

Time Traveler

The first known use of faulty was in the 14th century

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Dictionary Entries Near faulty

fault vent


fault zone

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Statistics for faulty

Last Updated

19 May 2022

Cite this Entry

“Faulty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/faulty. Accessed 23 May. 2022.

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More Definitions for faulty


\ ˈfȯl-tē How to pronounce faulty (audio) \
faultier; faultiest

Kids Definition of faulty

: having a fault, flaw, or weakness : imperfect

More from Merriam-Webster on faulty

Nglish: Translation of faulty for Spanish Speakers

Britannica English: Translation of faulty for Arabic Speakers


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