defective — deficient:
[different pronunciation]
defective teeth
“Defective”, for the right pronunciation, please click here, means ‘having a fault or defect (something wrong or broken); faulty; not working properly’,
defective hearing
e.g.
You can get a refund on any defective item (thing) you buy in this supermarket.
He is suffering from defective hearing.
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nitrogen deficient leaves
“Deficient”, for the right pronunciation, please click here, means ‘lacking; not having anything or not having enough of something’,
e.g.
The has been a deficient supply of water in our town.
She is deficient in many of the qualities needed to make herself a good teacher.
Common Errors:
Any electronic goods that are found to be defect are replaced. [wrong]
Any electronic goods that are found to be defective are replaced. [right]
