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.

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

Investigations have repeatedly pointed to lax inspections, faulty electrical systems and buildings operating beyond their approved use.

From BBC • Jun. 3, 2026

Both arguments rest on a faulty premise that no meaningful trade-offs exist between national security and economic engagement with adversaries.

From The Wall Street Journal • May 31, 2026

Philips said Wednesday its first-quarter profits had doubled, maintaining its sales forecasts as the Dutch electronics and medical device manufacturer seeks to turn the page on a scandal involving faulty sleep machines.

From Barron's • May 6, 2026

“You mean the ones with ladders that only reached to the sixth floor and the faulty equipment? They weren’t exactly helpful. Those women had no way out and no one who could save them.”

From "Glitch" by Laura Martin

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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