illness

noun

IL-nuhs/ˈɪl.nəs/

Pluralillnesses (some meanings)

2 meanings of illness

1
noununcountable
A state of poor health or disease.
Chronic illness affected nearly every part of her daily routine.
The region saw rising rates of illness during the cold months.
Similarsickness, disease, infirmity
Oppositehealth, wellness
2
nouncountable
A specific instance of disease or poor health.
The doctor diagnosed a rare illness after several rounds of tests.
Many tropical illnesses can be prevented with the right vaccines.
Similardisease, sickness, ailment, condition, disorder

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Origin

Formed from the adjective "ill" combined with the suffix "-ness".