sickness Meaning, Definition & Usage

  1. noun impairment of normal physiological function affecting part or all of an organism
    malady; illness; unwellness.
  2. noun defectiveness or unsoundness
    • drugs have become a sickness they cannot cure
    • a great sickness of his judgment
  3. noun the state that precedes vomiting
    nausea.

WordNet

Sick"ness noun
Etymology
AS. seócness.
Definitions
  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.

Webster 1913