Definitions

faulty

[fawl-tee] / ˈfɔl ti /

ADJECTIVE

not working; incorrect

Synonyms

STRONGEST

broken cracked damaged defective deficient erroneous false flawed imprecise inaccurate inadequate incomplete insufficient invalid leaky malfunctioning unreliable

WEAK

adulterated amiss awry bad below par blamable blemished botched debased distorted fallacious fallible frail impaired imperfect inexact injured lame lemon maimed malformed marred out of order rank sick tainted unfit unretentive unsound warped weak wrong

Antonyms

STRONGEST

OK accurate adequate ample complete correct enough faultless fixed flawless honest perfect reliable right sufficient true unbroken valid working

WEAK

sound strong

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Whether the plumber directly caused the problem, failed to identify an underlying issue, or repaired one faulty component only for another to reveal itself, the result is the same: the cistern does not function properly.

From MarketWatch • Jun. 10, 2026

Project opponents also filed multiple lawsuits seeking to kill the project, alleging faulty environmental reviews and improper city approval.

From Los Angeles Times • Jun. 9, 2026

Vehicles, when they encounter mechanical problems such as faulty wiring or an air leak, can now beam that information to the owners app and to the dealer.

From The Wall Street Journal • Jun. 6, 2026

The gas was released on maternity units when cannisters were connected, birthing mothers exhaled, and when the equipment was faulty, according to papers filed at the High Court.

From BBC • May 18, 2026

Now I was alone, leaving the smaller cities that had winked out long ago like Christmas lights on a faulty wire.

From "The Marrow Thieves" by Cherie Dimaline

Vocabulary lists containing faulty

Fake It 'Til You Make It: Synonyms for "False"

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Drama

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Way Off: Synonyms for "Wrong"

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