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.

See Examples For:

illnesses

The fires have created severe haze locally, with tens of thousands of cases of respiratory illnesses, and also caused regional air pollution spikes in Singapore and Malaysia.

From Barron's ● Oct. 9, 2026

Compared with other illnesses, the plague isn’t much of a problem these days: Each year the regular old flu kills many thousands of people in the United States alone.

From Slate ● Oct. 8, 2026

Changes in gene activity and immune signaling do not necessarily translate directly into fewer illnesses, and larger clinical studies are needed to establish what the differences mean for everyday health.

From Science Daily ● Oct. 8, 2026

Advanced requests are not currently legal under federal law, but are allowed in Quebec for those with serious and incurable illnesses.

From BBC ● Oct. 7, 2026

Lillian asked, knowing that Bull feared heart attacks above all other illnesses.

From "The Great Santini" by Pat Conroy