- the condition of being sick or diseased; illness
- a malady or disease
- The condition of being sick; illness.
- A disease; a malady.
- A defective or unsound condition.
(usually uncountable, plural sicknesses)
- The quality or state of being sick or diseased; illness; disease or malady.
- Nausea; qualmishness; as, sickness of stomach.
From the Old English seocness.