Having a problem or fault that prevents it from working correctly
Examples:
The recall was due to the defective airbags installed.Detecting the defective gene is key for the diagnosis.The product had a defective seal, causing leaks.
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Antonyms:
Deficient
/dɪˈfɪʃənt/
Lacking in something necessary or required
Examples:
Her report was deficient in key statistics.The deficient soil yielded poor crop results.His deficient knowledge led to frequent errors.
Synonyms:
Antonyms:
Ways to tell them apart:
Defective often implies something is broken or not working correctly, while deficient means lacking or insufficient in some way.
Defective items are usually unusable without repair, whereas deficient items might still function but not optimally.
Think of defective as relating to flaws or malfunctions, while deficient often relates to missing qualities or inadequacies.
A defective product might have a manufacturing error; a deficient product might be missing features or qualities.
Deficient deals more with shortages, such as insufficient vitamins or nutrients, while defective is about faults or errors in function.