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

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

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

From BBC • Jun. 3, 2026

Oil and gas companies should tighten valves, close hatches, replace worn and faulty equipment, ensure equipment is well maintained, end routine flaring, and track emissions to know how much gas is escaping from where.

From The Wall Street Journal • May 21, 2026

But Citra knew it was false, faulty logic.

From "Scythe" by Neal Shusterman

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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