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.
The contract scrutiny has been blamed for numerous delays across government, such as delays in providing emergency response during a disaster, clearance to repair faulty plumbing in a weather service office or authorizations for wildlife biologists to conduct field work. Dinah Voyles Pulver, USA Today, 22 Feb. 2026 The past four years of conflict have exposed more than one faulty assumption, not least the previously widespread belief even among Kyiv’s allies that Ukraine would be too weak, too disorganized, to resist a full-scale invasion. Matthew Chance, CNN Money, 21 Feb. 2026 So, too, did fellow American Amber Glenn, whose medal dreams were thwarted by a faulty short program but then delivered a strong free skate and returned Saturday night to appear in the gala. Steve Buckley, New York Times, 21 Feb. 2026 The Grand Concourse fire was caused by a faulty circuit breaker panel. Lillian Bonsignore, New York Daily News, 18 Feb. 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

Browse Nearby Words

Cite this Entry

“Faulty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/faulty. Accessed 26 Feb. 2026.

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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster