defective

adjective
de·​fec·​tive | \ di-ˈfek-tiv How to pronounce defective (audio) \

Definition of defective

 (Entry 1 of 2)

1a : having a defect or flaw : imperfect in form, structure, or function replaced a defective light switch products manufactured with defective materials defective intestinal absorption a defective gene
b dated, now offensive : having a physical or mental impairment
2 grammar : lacking one or more of the usual forms of inflection (see inflection sense 3) Must is a defective verb.

defective

noun

Definition of defective (Entry 2 of 2)

1 : something that is imperfect in form, structure, or function … if we examine 18 items off the production line, we may be interested in the number of defectives we observe in the sample of size 18.— Lloyd Jaisingh
2 dated, now offensive : a person having a physical or mental impairment

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Other Words from defective

Adjective

defectively adverb
defectiveness noun

Synonyms & Antonyms for defective

Synonyms: Adjective

amiss, bad, faulty, flawed, imperfect

Antonyms: Adjective

faultless, flawless, impeccable, perfect

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Examples of defective in a Sentence

Adjective

This computer is defective. I want my money back. The disease is caused by a defective gene.

Recent Examples on the Web: Adjective

Drinking a defective potion takes a French nobleman and his servant from the Middle Ages to 20th-century Chicago. Los Angeles Times, "Here are the feature and TV films airing the week of Sunday, Aug. 11, 2019," 11 Aug. 2019 Phase 2 of Silver Line construction, initially projected to finish at the end of last month, has been plagued by issues such as cracks in concrete structures and defective rail ties. Hannah Natanson, Washington Post, "Metro says stations closed for shutdown will reopen on time next month — unless there’s a really bad storm," 9 Aug. 2019 The fire department is still investigating and speaking with the home's former owners, but believes a defective appliance or leak in the building is to blame. Emma Keith, Detroit Free Press, "Detroit house explosion caused by gas leak, fire department says," 6 Aug. 2019 Maria Laura Canineu, the organization's Brazil director, called the violence the most visible sign of a structurally defective system. Anchorage Daily News, "Dozens of inmates killed in Brazil prison riot, with at least 16 decapitated," 29 July 2019 Maria Laura Canineu, the organization’s Brazil director, called the violence the most visible sign of a structurally defective system. Terrence Mccoy And, BostonGlobe.com, "Dozens of inmates killed in Brazil prison riot," 29 July 2019 These choices spared many early adopters from getting defective early models of the Apple Watch. Bloomberg, The Mercury News, "Apple’s heir apparent is much more like Tim Cook than Steve Jobs," 22 July 2019 In the dog collar case, The Furry Gang, the third-party vendor that sold the defective collar, completely disappeared. Louise Matsakis, WIRED, "Amazon Warns Customers: Those Supplements Might Be Fake," 19 July 2019 At this time, the dealership has the defective 2012 Ford Focus for sale on their lot, which worries me that someone else might get hurt driving that car. Freep.com, "FREE PRESS INVESTIGATION: OUT OF GEAR Among Ford cars with flawed transmission, the 2012 Focus had the most complaints," 11 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'defective.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of defective

Adjective

14th century, in the meaning defined at sense 1a

Noun

1562, in the meaning defined at sense 1

History and Etymology for defective

Adjective

Middle English defectif, defectyve "lacking, faulty, of poor quality," borrowed from Anglo-French defectif, borrowed from Late Latin dēfectīvus "lacking an inflectional form, imperfect, faulty," from Latin dēfectus, past participle of dēficere "to be lacking, run short, fail" + -īvus -ive — more at deficient

Noun

derivative of defective entry 1

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Statistics for defective

Last Updated

17 Sep 2019

Look-up Popularity

Time Traveler for defective

The first known use of defective was in the 14th century

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More Definitions for defective

defective

adjective

English Language Learners Definition of defective

: having a problem or fault that prevents something from working correctly : having a defect or flaw

defective

adjective
de·​fec·​tive | \ di-ˈfek-tiv How to pronounce defective (audio) \

Kids Definition of defective

: having a defect or flaw The car's brakes were defective.

defective

adjective
de·​fec·​tive | \ di-ˈfek-tiv How to pronounce defective (audio) \

Medical Definition of defective

 (Entry 1 of 2)

: falling below the norm in structure or in mental or physical function defective eyesight

Other Words from defective

defectiveness \ -​nəs How to pronounce defectiveness (audio) \ noun

defective

noun

Medical Definition of defective (Entry 2 of 2)

: one that is subnormal physically or mentally

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Comments on defective

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