defective

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

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

Royole’s was terrible, Samsung’s has proven defective, Huawei’s is behind schedule, and Xiaomi and Oppo’s alternatives are merely social media video teases for now. Vlad Savov, The Verge, "The best foldables are going to be widescreen," 12 July 2019 So, just to be clear: A judge knowingly issued a legally defective order for no reason other than to send a message. Jack Greiner, Cincinnati.com, "Strictly Legal: Bizarre ruling in Virginia," 9 July 2019 Apple often announces voluntary replacements for defective products, usually after customer complaints have built up (look at what’s happened with the keyboards on most of its modern laptops), but rarely mandatory recalls. Mike Murphy, Quartz, "Apple is recalling MacBook Pros that could catch on fire," 27 June 2019 Investigators concluded the blaze was ignited by a defective electrical outlet in the basement. Michael Kunzelman, baltimoresun.com, "Maryland millionaire gets 9 years in death of man building nuclear bunker tunnels," 17 June 2019 Investigators concluded the blaze was ignited by a defective electrical outlet in the basement. Michael Kunzelman, Fortune, "Wealthy Stock Trader Convicted of Murder Won't Get New Trial," 13 June 2019 Several reporters given early access to the device discovered defective hinges and that their screens broke after removing the Fold's protective film. Ahiza Garcia, CNN, "Why it's so hard to make a foldable smartphone," 26 June 2019 General Motors was forced to recall 29 million cars in North America starting in 2014 when a defective ignition switch would suddenly shut off the engine. Ralph Vartabedian, latimes.com, "Electrical defects cause Priuses to stall; Toyota may be bracing for a legal fight as safety worries grow," 23 Apr. 2018 The case is tied to GM's 2014 recall of 2.6 million vehicles with defective ignition switches, including one linked to 124 deaths. Greg Gardner, USA TODAY, "Judge rejects GM ignition switch deal for car owners," 19 Jan. 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

16 Jul 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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