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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.
The investigation has raised concerns about bamboo scaffolding, renovation netting, foam sealant used around windows and elevators, and faulty fire alarms, with authorities examining several possible fire-code violations. Mandy Taheri, MSNBC Newsweek, 30 Nov. 2025 In their suit, the Weilert family claimed that the WSDOT knew that the device was faulty for several weeks before the deadly incident and failed to take any action. Charlotte Phillipp, PEOPLE, 30 Nov. 2025 The well had a faulty design to begin with, and operators either ignored or didn’t recognize early warning signs. Kylie Williams, Miami Herald, 29 Nov. 2025 Not all of us would risk so much humiliation just to fix a faulty chair design. Shirley Li, The Atlantic, 28 Nov. 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 1 Dec. 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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