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.
Its old building, constructed in 1939 for the Social Security Board, needed expensive renovations; reportedly had ancient, faulty wiring; was far too big; and was generally unsuitable for modern journalism. The Atlantic, 11 Feb. 2026 In the elaborate opening sequence, Davis steals some hot diamonds from a local jeweler and his assistants, which involves stopping them in cars and getting lucky enough to just be missed by a bullet fired from an ancient faulty pistol. Owen Gleiberman, Variety, 11 Feb. 2026 The issue could be a faulty door, trunk, or hood switch. John Paul Senior Manager Public Affairs and Traffic Safety Aaa Northeast, Hartford Courant, 8 Feb. 2026 Before the BusPatrol camera program was suspended last year for doling out questionable violations, the private company running the operation was also mailing out violations with faulty information. Douglas Hanks, Miami Herald, 4 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 13 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