Synonyms of illnesses

illnesses

noun

plural of illness

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

• diseases
• ailments
• sicknesses
• ills
• fevers
• conditions
• disorders
• infections
• maladies
• attacks
• bugs
• complications
• infirmities
• ails
• distempers
• troubles
• complaints
• plagues
• distemperatures
• affections
• contagious diseases
• contagions
• weaknesses
• debilities
• bouts
• epidemics
• malaises
• spells
• pests
• matters
• pestilences
• contagia
• decrepitudes
• fits
• pips

Example Sentences

Recent Examples of illnesses

Although the first illnesses began in mid-May, the CDC didn’t notify the public or healthcare providers about the outbreak until July 14. — Blake Ellis, CNN Money, 20 July 2026

While multiple cooling towers have tested positive for Legionella bacteria, investigators have not determined which, if any, are responsible for the illnesses. — Anthony Thompson, USA Today, 19 July 2026

Michigan, the state with the highest case count, has recorded more than 5,000 illnesses as of July 17. — Jaewon Kang, Fortune, 18 July 2026

At the same time, patients with cancer, kidney disease, complex heart disease, and other serious illnesses must have timely access to specialty care. — Torie Bosch, STAT, 18 July 2026

But investigators are still working to determine the product or supplier behind illnesses elsewhere in the country. — Lila Hempel-Edgers, Chicago Tribune, 17 July 2026

Those with heart disease and respiratory illnesses, young children and older adults are more at risk. — Lauren Penington, Denver Post, 5 July 2026

Although there were no official national mortality records in 1776, historians agree that the following illnesses were responsible for the largest number of deaths. — Melissa Rudy, FOXNews.com, 3 July 2026

Cruise ships are required to report GI illnesses to the CDC as soon as possible in order to detect outbreaks quickly and prevent them from spreading, the agency states. — Colson Thayer, PEOPLE, 2 July 2026