sickness

Noun

• the state that precedes vomiting

• defectiveness or unsoundness
  • drugs have become a sickness they cannot cure
    
  • a great sickness of his judgment
    

• impairment of normal physiological function affecting part or all of an organism

Related words

• Synonyms: 
  nausea , illness , unwellness , malady
• Antonyms: 
  health , wellness