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.
This is what happens to faulty foundations. Omar Kelly updated October 5, Miami Herald, 5 Oct. 2025 This concentration of energy creates a tiny, controlled burn that interrupts the faulty circuit causing the tremor. Charlotte Observer, 2 Oct. 2025 Ingredient prices continue to soar, as do the rates for necessary repairs — the faulty range, the leaky roof. Gary Baum, HollywoodReporter, 2 Oct. 2025 These faulty proteins accumulate in a deep brain structure called the striatum and cause symptoms such as uncontrollable movements, muscle spasms and cognitive decline that worsen over time. Allison Parshall, Scientific American, 30 Sep. 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 11 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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