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.
After a faulty cooling system was left to disrepair, rising temperatures resulted in an explosion with the equivalent force of 70-100 tons of TNT. Kurt Snibbe, Oc Register, 25 Apr. 2026 Other possibilities include faulty wheel speed sensors or a brake pedal switch that’s intermittently failing. Hartford Courant, 25 Apr. 2026 That Fordham Heights blaze was also spread by oxygen that fed the fire through open, faulty, self-closing doors. Julian Roberts-Grmela, New York Daily News, 24 Apr. 2026 Regeneron's gene therapy Otarmeni treats a rare disease where a faulty OTOF gene limits production of a protein that transmits sound signals in the ear. Angelica Peebles, CNBC, 24 Apr. 2026 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 26 Apr. 2026.

Kids Definition

faulty

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

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