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Showing results for illness. Search instead for illne.
Definitions

illness

[il-nis] / ˈɪl nɪs /
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.

Both bots identified dips in my heart-rate variability data and an increase in resting heart rate from my smartwatch, which could indicate my body has been fighting an illness.

From The Wall Street Journal • Apr. 4, 2026

My chronic illness flared, and fear hovered over me like smog.

From Los Angeles Times • Apr. 3, 2026

Older adults are far more likely to develop severe illness from flu or COVID, and new research from UC San Francisco offers an explanation.

From Science Daily • Apr. 3, 2026

Former bandmates have paid tribute to Showaddywaddy guitarist Trevor Oakes, who has died following a long illness.

From BBC • Mar. 30, 2026

And was the picture before or after her illness?

From "How to Disappear Completely" by Ali Standish

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.