sickness
//ˈsɪknəs//
Noun
sicknessSingular
sicknessesPlural
1
The state of being ill or unhealthy; a disease or illness.
She missed school because of sickness.
2
A feeling of nausea or queasiness, especially the urge to vomit.
I felt a sudden sickness after the boat ride.
3
A particular type of disease or medical condition.
Altitude sickness is common among mountain climbers.