Definition of defective
- replaced a defective light switch
- defective eyesight
- a defective gene
- Must is a defective verb.
This computer is defective. I want my money back.
The disease is caused by a defective gene.
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.
on the blink;
: having a problem or fault that prevents something from working correctly : having a defect or flaw
What made you want to look up defective? Please tell us where you read or heard it (including the quote, if possible).
investment of mental or emotional energy
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