Defective meaning

dĭ-fĕk'tĭv
Having a physical or mental defect; subnormal.
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A person with some physical or mental defect.
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A defective word.
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Of a product or process, that it contains an error or flaw affecting performance; of a pleading or document, that it contains a shortcoming potentially causing its invalidity or leading to its dismissal.
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Having one or more defects.
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(grammar, of a verb) Lacking some forms; e.g., having only one tense or being usable only in the third person.
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A person considered to be defective.
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The definition of defective is something or someone that is imperfect or that doesn't work properly.

A door that does not latch correctly is an example of something that would be described as defective.

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Lacking one or more of the inflected forms normal for a particular category of word, as the verb may in English.
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Having a defect; faulty.

A defective appliance.

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Marked by subnormal structure, function, intelligence, or behavior.

Defective speech.

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One who has a physical or mental disability.
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Having a defect or defects; imperfect; faulty.
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Lacking some of the usual forms of inflection.

“ought” is a defective verb.

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Origin of defective

From Middle French défectif