as in diseases
an abnormal state that disrupts a plant's or animal's normal bodily functioning
suffered from a mysterious illness that left her weak and tired all the time
Synonyms & Similar Words
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Recent Examples of illnesses
Oura rings are beloved for their ability to track steps, monitor sleep, and even catch illnesses before symptoms begin.
—
Genevieve Cepeda,
InStyle,
27 June 2026
Older adults and young children are most sensitive to extreme heat, as are people who are pregnant, overweight, have disabilities or chronic illnesses.
—
Mike Stunson,
USA Today,
26 June 2026
Prolonged exposure to extreme heat can cause illnesses like heat exhaustion, heat cramps, and the most serious type, heat stroke, according to the US Centers for Disease Control and Prevention.
—
Chris Dolce,
CNN Money,
26 June 2026
Their patients include children who have seizure disorders, congenital heart diseases that require surgery, cerebral palsy, traumatic brain injuries and leukemia, as well as others who need feeding tubes and ventilators to treat their illnesses, according to their court declarations.
—
Nicole Acevedo,
NBC news,
25 June 2026
In December 2025, Norwegian tech firm No Isolation introduced the AV1 classroom robot, enabling children with long-term illnesses to attend lessons remotely.
—
Jijo Malayil,
Interesting Engineering,
25 June 2026
Prolonged or acute exposure to smoke has been known to trigger heart attacks, strokes and other serious respiratory illnesses.
—
Alex Wigglesworth,
Los Angeles Times,
25 June 2026
The outbreak was first detected in the gold-mining town of Mongbwalu, where health workers began noticing a cluster of mysterious illnesses and deaths earlier this year.
—
Greg Dixon,
NPR,
24 June 2026
At just 3 months old, Josie had a string of illnesses – RSV, pneumonia and the flu.
—
Jan Carabeo,
CBS News,
17 June 2026
Genevieve Cepeda,
InStyle,
27 June 2026
Older adults and young children are most sensitive to extreme heat, as are people who are pregnant, overweight, have disabilities or chronic illnesses.
—
Mike Stunson,
USA Today,
26 June 2026
Prolonged exposure to extreme heat can cause illnesses like heat exhaustion, heat cramps, and the most serious type, heat stroke, according to the US Centers for Disease Control and Prevention.
—
Chris Dolce,
CNN Money,
26 June 2026
Their patients include children who have seizure disorders, congenital heart diseases that require surgery, cerebral palsy, traumatic brain injuries and leukemia, as well as others who need feeding tubes and ventilators to treat their illnesses, according to their court declarations.
—
Nicole Acevedo,
NBC news,
25 June 2026
In December 2025, Norwegian tech firm No Isolation introduced the AV1 classroom robot, enabling children with long-term illnesses to attend lessons remotely.
—
Jijo Malayil,
Interesting Engineering,
25 June 2026
Prolonged or acute exposure to smoke has been known to trigger heart attacks, strokes and other serious respiratory illnesses.
—
Alex Wigglesworth,
Los Angeles Times,
25 June 2026
The outbreak was first detected in the gold-mining town of Mongbwalu, where health workers began noticing a cluster of mysterious illnesses and deaths earlier this year.
—
Greg Dixon,
NPR,
24 June 2026
At just 3 months old, Josie had a string of illnesses – RSV, pneumonia and the flu.
—
Jan Carabeo,
CBS News,
17 June 2026
Recent Examples of Synonyms for illnesses
Noun
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In the 1940s, the widespread use of penicillin allowed for the treatment of diseases that were once fatal.
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Minerals such as calcium, manganese, and fluoride support bone health, helping to prevent or manage diseases like arthritis and osteoporosis.
Noun
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The women wanted physicians who were disease preventers, and doctors who were attentive to the difficulties wrought by menopause, which have been increasingly found to leave women vulnerable to other ailments.
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Peterson had a chaotic lone season with the Jayhawks, filled with various injuries and ailments, but remained in contention for a top-3 pick the entire year.
Noun
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At the end of the day, both doctors agree that hotel stays shouldn’t deter people from traveling altogether, since there are always ways to proactively minimize exposure and subsequent sicknesses.
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Olena started with the children, the most vulnerable refugees as well as the most likely vectors of new sicknesses in the theater.
Noun
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Around the country, data centers have been blamed increasingly for a host of environmental ills.
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That’s actually the theme of an essay that Masha Gessen, who writes often about Russia and its many ills, has asked.
Noun
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For example, the prescription offered by those who saw a generally healthy way of life as the right way to prevent disease helped propel cleaning up the filthy cities of the Industrial Revolution—and that really did reduce the impact of common fevers.
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Amir suffered fevers and stomach issues during his incarceration at Dilley, according to the report.
Noun
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The England players and supporters may be at an advantage in the wet conditions.
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Building resilience Stephanie Niven, co-portfolio manager of the Global Sustainable Equity strategy at Ninety One, told CNBC on a call on Friday that her team took the view that the rise of intense weather conditions in Europe was creating a structural growth opportunity for investment.
Cite this Entry
“Illnesses.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/illnesses. Accessed 5 Jul. 2026.
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