1

defective

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adjective de·fec·tive \di-ˈfek-tiv\

Definition of defective

  1. 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. 2 grammar :  lacking one or more of the usual forms of inflection (see inflection 3) <Must is a defective verb.>

defectively

adverb

defectiveness

noun

Examples of defective in a sentence

  1. This computer is defective. I want my money back.

  2. The disease is caused by a defective gene.

Origin and Etymology of defective

see 1defect


First Known Use: 14th century


2

defective

noun de·fec·tive

Definition of defective

  1. :  a person who is subnormal physically or mentally

Origin and Etymology of defective

see 1defect


First Known Use: 1592


DEFECTIVE Defined for English Language Learners

1

defective

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adjective de·fec·tive \di-ˈfek-tiv\

Definition of defective for English Language Learners

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


DEFECTIVE Defined for Kids

defective

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

Definition of defective for Students

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


Medical Dictionary

1

defective

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

Medical Definition of defective

  1. :  falling below the norm in structure or in mental or physical function <defective eyesight>

defectiveness

\-nəs\play noun

2

defective

noun de·fec·tive

Medical Definition of defective

  1. :  one that is subnormal physically or mentally



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