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illnesses

NOUN

disease; bad health

Synonyms

STRONGEST

ailment breakdown collapse disability disorder disturbance flu ill health malady relapse seizure sickness syndrome virus

STRONG

affliction attack bug complaint confinement convalescence dose fit indisposition infirmity malaise prostration

WEAK

ailing diseasedness failing health poor health unhealth what's going around

Antonyms

STRONGEST

health order

STRONG

aid good health healthiness

WEAK

well-being wellness

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.

Cancer is one of the leading causes of disease and death in cats, yet scientists have historically known very little about the genetic changes driving these illnesses.

From Science Daily • May 24, 2026

Initial symptoms of Ebola mirror illnesses such as malaria and typhoid, which are common in DR Congo.

From BBC • May 20, 2026

From a theoretical perspective, cruises are absolutely great places for illnesses to thrive .

From Slate • May 16, 2026

Unlike other infectious respiratory illnesses, hantavirus “infects cells very deep in the lungs, so it’s not as easily transmitted then when someone is speaking or coughing,” Iovine said.

From Los Angeles Times • May 11, 2026

Had the Republic murdered relatives of my Drake classmates too, all those people who died in combat or in accidents or of illnesses?

From "Legend" by Marie Lu