impair
verb (used with object)
to make or cause to become worse; diminish in ability, value, excellence, etc.; weaken or damage.
impairs
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present tense formof impair (3rd person singular).present tense
Used to describe things happening now or regularly.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"Abdominal obesity reduces circulating vitamin D, and that deficiency impairs the immune system, exacerbating the chronic inflammation caused by excess fat and drastically increasing the risk of mortality," Alexandre explains to Agência FAPESP.
From Science Daily ● Aug. 14, 2026
This impairs our ability to quickly shed excess heat and makes it harder to judge when our bodies are under burden, simply because we can't see as much sweat on our skin or clothing.
From BBC ● Jul. 8, 2026
High blood sugar impairs immune function and narrows vessels that carry oxygen-rich blood, making it harder for skin to heal.
From Los Angeles Times ● Jun. 14, 2026
America’s current structural weakness against supply disruptions impairs its geopolitical position and gives U.S. adversaries a tempting target.
From MarketWatch ● Jun. 3, 2026
This blindness impairs us in every act of communication.
From "The Sense of Style" by Steven Pinker
