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faultier; faultiest
Synonyms of faultynext
: 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.
If the furnace doesn’t respond, your thermostat may be faulty. Angie Hicks, Boston Herald, 6 Dec. 2025 In the filing, Chauvin claims his conviction should be vacated, saying flawed medical testimony, misrepresented police training and faulty jury instructions warrant a new trial or evidentiary hearing. Stephen Sorace, FOXNews.com, 4 Dec. 2025 OpenAI has been sued several times over the past month, each case claiming that the company’s flagship product is faulty and dangerous—that it is designed to hold long conversations and reinforce users’ beliefs, no matter how misguided. Matteo Wong, The Atlantic, 4 Dec. 2025 Studies showed the sinkholes were caused by a faulty drainage system and not by soil conditions. Phil Diehl, San Diego Union-Tribune, 4 Dec. 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 8 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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