English to English

noun (n)

• a state of comatose torpor (as found in sleeping sickness)(noun.state)

  Synonym:
  lassitude, lethargy
  

  source: wordnet30
• the pace of things that move relatively slowly(noun.attribute)

  Example:
  The sluggishness of the economy.
  The sluggishness of the compass in the Arctic cold.
  

  source: wordnet30
• inactivity; showing an unusual lack of energy(noun.attribute)

  Example:
  The general appearance of sluggishness alarmed his friends.
  

  Synonym:
  flatness, languor, lethargy, phlegm
  

  source: wordnet30