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“impairs”
impair (verb), impairs; impaired; impairing
1. To make or to cause something to become worse; to diminish in ability, value, excellence, etc.; to weaken or to damage: Improper eating can impair one's health.
![To make worse or to diminish in quality.](http://www.wordinfo.info/words/images/impair-1.jpg)
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![To decrease in strength.](http://www.wordinfo.info/words/images/impair-2.jpg)
© ALL rights are reserved.
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A severe storm is impairing the transmission of the TV programs.
John's vertebrae operation is impairing his mental and physical functions.
2. Etymology: from about 1374, it was ampayre, apeyre, from Old French empeirier, from Vulgar Latin impejorare, "to make worse"; from Latin in-, "into" + Late Latin pejorare, "to make worse", from pejor, "worse".![To make worse or to diminish in quality.](http://www.wordinfo.info/words/images/impair-1.jpg)
![To decrease in strength.](http://www.wordinfo.info/words/images/impair-2.jpg)