illness
noun
poor health; sickness.
illnesses
-
pluralof illness.plural
The grammatical form denoting more than one person, place, thing, or idea.
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.
To qualify, volunteers had to be free of injuries and illnesses, have no current or previous use of blood pressure medication, and be nonsmokers.
From Science Daily ● Oct. 27, 2026
Such hypothetical benefits include progress in healthcare, like the development of bespoke treatments for illnesses and improved disease detection, tailored education and legal advice and making more efficient power grids and batteries.
From BBC ● Oct. 26, 2026
Mowi’s salmon start their lives in land-based tanks, where they are vaccinated against various illnesses, such as pancreatic disease and winter sores.
From The Wall Street Journal ● Oct. 20, 2026
About half of American adults live with at least one chronic disease, like heart disease, diabetes or cancer, and about 85% of healthcare dollars go toward caring for these illnesses.
From MarketWatch ● Oct. 13, 2026
As we all know from experience, there are some illnesses, such as flu and the common cold, to which our resistance is only temporary; we can eventually contract the illness again.
From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond
