faulty

[fawl-tee]

adjective

faultier, faultiest 

1. having faults or defects; imperfect.

faulty

/ ˈfɔːltɪ /

adjective

1. defective or imperfect

2. archaic,  culpable

Other Word Forms

• faultily adverb
• faultiness noun
• nonfaulty adjective
• unfaulty adjective

Word History and Origins

Origin of faulty¹

First recorded in 1300–50, faulty is from the Middle English word fauty. See fault, -y ¹

Example Sentences

Mark Cuban, part owner of the Dallas Mavericks, took to X.com to suggest that Torre’s reporting was faulty.

From Los Angeles Times

In a civil complaint, prosecutors allege that the Eaton fire ignited “from faulty power infrastructure or by sparks from faulty power infrastructure owned, maintained, and operated” by Edison.

From Los Angeles Times

On Friday, an appellate court ruled that many of his tariffs were based on a faulty interpretation of federal law.

From BBC

Footage from inside a faulty Jubilee line train, which became stuck between Westminster and Waterloo stations on Monday night, shows passengers filing out of what witnesses described as "hot and completely packed" carriages.

From BBC

But UK business owners and industry groups say they want swifter action to protect High Street retailers from being undercut, and consumers from potentially faulty goods.

From BBC

Related Words

• broken 
• cracked 
• damaged www.thesaurus.com
• defective 
• deficient 
• erroneous 
• false 
• flawed 
• imprecise 
• inaccurate 
• inadequate 
• incomplete 
• insufficient 
• invalid 
• leaky 
• malfunctioning www.thesaurus.com
• unreliable