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.

Nintendo promised in 2023 that it would repair or replace faulty controllers without cost, even if no longer covered by warranty.

From Barron's • Jun. 8, 2026

There’s a catch, says Schuna: The more active your hands are, the more faulty the sensor readings can be.

From The Wall Street Journal • Jun. 7, 2026

He blames the utilities for high consumer bills and causing deadly wildfires with their faulty utility equipment.

From Los Angeles Times • May 26, 2026

Also separate to the court claim, the women say footfall counters were faulty, which meant Vodafone thought their stores should be making more revenue than was possible.

From BBC • May 5, 2026

A few scenes appear to be combinations of her own observations and faulty information collected from others.

From "The Girl Who Drew Butterflies: How Maria Merian's Art Changed Science" by Joyce Sidman

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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