illness
nounUK /ˈɪl.nəs/
US /ˈɪl.nəs/
A time when your body is sick and does not feel well.
She missed school because of an illness.
OTHER MEANINGS
2. A particular kind of sickness that has a name.
Chickenpox is a common childhood illness.
3. The state of being unwell in general.
His illness kept him in bed for a week.
4. A problem or bad condition in something not alive.
The illness of the economy worried many people.