Synonyms of faulty

faulty

adjective

ˈfȯl-tē 

as in defective

having a fault

the cause of the plane crash was traced to faulty wiring

Synonyms & Similar Words

• defective
• imperfect
• bad
• flawed
• damaged
• broken
• incomplete
• amiss
• inadequate
• insufficient
• fallible
• on the blink
• spoiled
• injured
• deficient
• impaired
• hurt
• marred
• blemished
• crippled
• disfigured
• wanting
• harmed
• vitiated
• defaced

Antonyms & Near Antonyms

• perfect
• intact
• whole
• entire
• complete
• flawless
• faultless
• impeccable
• undamaged
• unimpaired
• unblemished
• unspoiled

Example Sentences

Recent Examples of faulty

The launch was delayed from mid-September to replace a balky valve in the Dragon spacecraft’s propulsion system, a task that involved cutting into a propellant line inside the ship to swap out a faulty component. — Stephen Clark, ArsTechnica, 1 Oct. 2026

Faulty Temperature Sensor Another mechanical failure that can cause long warming times is a faulty temperature sensor. — Karen Brewer Grossman, Southern Living, 28 Sep. 2026

Hopefully, the city of Atlanta and the faulty Macon Drive commuters can learn a lesson. — Doug Turnbull, AJC.com, 27 Sep. 2026

The contractor two days later reported that faulty components had been repaired, but testing by Eversource resulted in further failures, and the building has remained dark since then. — Don Stacom, Hartford Courant, 24 Sep. 2026