'Sickness' definitions:

Definition of 'sickness'

From: WordNet
noun
Impairment of normal physiological function affecting part or all of an organism [syn: illness, unwellness, malady, sickness] [ant: health, wellness]
noun
Defectiveness or unsoundness; "drugs have become a sickness they cannot cure"; "a great sickness of his judgment"
noun
The state that precedes vomiting [syn: nausea, sickness]

Definition of 'Sickness'

From: GCIDE
  • Sickness \Sick"ness\, n. [AS. se['o]cness.]
  • 1. The quality or state of being sick or diseased; illness; sisease or malady. [1913 Webster]
  • I do lament the sickness of the king. --Shak. [1913 Webster]
  • Trust not too much your now resistless charms; Those, age or sickness soon or late disarms. --Pope. [1913 Webster]
  • 2. Nausea; qualmishness; as, sickness of stomach. [1913 Webster]
  • Syn: Illness; disease; malady. See Illness. [1913 Webster]

Synonyms of 'sickness'

From: Moby Thesaurus