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.

In fundamental ways, the decision builds on faulty logic.

From Slate • May 22, 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

Their results showed a direct cause and effect link between faulty mitochondrial activity and cognitive symptoms associated with neurodegenerative disease.

From Science Daily • May 16, 2026

But under the big open skies and cramped spaces of their eastward journey in a faulty car, traveling between what we glean is a tough past and a hoped-for future, we know something’s off.

From Los Angeles Times • May 1, 2026

Every so often there is a glitch from faulty drone film.

From "The Last Cuentista" by Donna Barba Higuera

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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