defective

adjective
de·fec·tive | \ di-ˈfek-tiv \

Definition of defective 

(Entry 1 of 2)

1a : imperfect in form or function : faulty replaced a defective light switch

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

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)

: a person who is subnormal physically or mentally

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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

Sauda Suleiman Amour, 19, was born with a defective abdominal wall that caused her liver and a part of her intestine to stick out of her abdomen. Fox News, "Doctors save teen who lived with organs outside body for 19 years," 18 June 2018 California has the highest number of defective airbags. CBS News, "Drivers urged to fix recalled Takata airbags that can explode," 12 June 2018 Apple has said that its iPhones don’t have a defective design. Don Reisinger, Fortune, "Apple Car Has a Flat and Samsung Must Pay Up," 26 May 2018 The deaths of seven people in Malaysia have been linked to the defective air bags. Fox News, "Malaysia says over 350,000 cars yet to change Takata airbags," 5 June 2018 Karen sued the speedway, the U.S. Auto Club and Bettenhausen’s race team for $9 million, claiming Bettenhausen’s car and wheel were defective, and that USAC – which governed the 500 back then – did not provide adequate inspection of the equipment. Zak Keefer, Indianapolis Star, "'It looked like a flying saucer': The story of the last spectator death at the Indy 500," 22 May 2018 In the complaint, the plaintiffs allege that keyboard's design is defective, despite the fact that Apple touts it as an advance. Dwight Silverman, Houston Chronicle, "Lawsuit targets Apple MacBook, MacBook Pro keyboards," 13 May 2018 Takata last month agreed to pay as much as $650 million to settle claims in 44 states and the District of Columbia for defective air bags that can explode in car crashes, sending metal shards flying. Bloomberg.com, "U.S. Probes Hyundai, Kia for Fatal Air-Bag Flaws," 19 Mar. 2018 If moving the selector switch without pulling the trigger causes the hammer to fall, the weapon is defective. Kyle Mizokami, Popular Mechanics, "The Army’s M4 Carbine Can Fire Even If You Don't Pull the Trigger," 1 June 2018

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

circa 1591, in the meaning defined above

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

27 Aug 2018

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 \

Kids Definition of defective

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

defective

adjective
de·fec·tive | \ di-ˈfek-tiv \

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 \ 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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