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.

One person died in an apartment fire ignited by a faulty e-bike battery in San José last week, authorities said.

From Los Angeles Times • Apr. 6, 2026

If eligibility for schemes is based on faulty or outdated data, the number of beneficiaries can be misjudged, distorting delivery.

From BBC • Mar. 31, 2026

It again ties back to this faulty idea that there isn’t much return on investment for AI compute.

From Barron's • Mar. 27, 2026

It’s also the faulty logic at the center of this case.

From Slate • Mar. 11, 2026

They assume the booby trap was faulty, but that the tribute who blew up the supplies was killed doing it.

From "The Hunger Games" by Suzanne Collins

Vocabulary lists containing faulty

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

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Drama

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Way Off: Synonyms for "Wrong"

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!