faultier; faultiest
: marked by fault or defect : imperfect
faultily adverb
faultiness noun

Examples of faulty in a Sentence

the cause of the plane crash was traced to faulty wiring
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Issuing a faulty boarding pass and leaving you stranded in Toronto is a clear breach of that obligation. Christopher Elliott, Mercury News, 25 Oct. 2025 Conceptions of world geography at the time were faulty to an almost absurd extent, Bergreen said. Lee Habeeb, MSNBC Newsweek, 22 Oct. 2025 Dati also insisted that security at the museum was not faulty. Jamie Gray, NBC news, 22 Oct. 2025 Past outages on this scale have been caused by a wide variety of errors, including faulty updates, the accidental injection of bad code, or a change to third-party software that doesn’t play nicely with a service. Alexandra Banner, CNN Money, 21 Oct. 2025 See All Example Sentences for faulty

Word History

First Known Use

14th century, in the meaning defined above

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

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Cite this Entry

“Faulty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/faulty. Accessed 29 Oct. 2025.

Kids Definition

faulty

adjective
faultier; faultiest
: having a fault or weakness : imperfect
faultily adverb
faultiness noun

More from Merriam-Webster on faulty

Last Updated: - Updated example sentences
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