Sickness \Sick"ness\, n. [AS. se['o]cness.]

1. The quality or state of being sick or diseased; illness; sisease or malady.

I do lament the sickness of the king. --Shak.

Trust not too much your now resistless charms; Those, age or sickness soon or late disarms. --Pope.

2. Nausea; qualmishness; as, sickness of stomach.

Syn: Illness; disease; malady. See Illness.

Source: Webster's Revised Unabridged Dictionary (1913)