noun (n)

• the state of containing nothing(noun.state)

  Antonym:
  fullness
  

  source: wordnet30
• having an empty stomach(noun.state)

  source: wordnet30
• an empty area or space(noun.shape)

  Example:
  The emptiness of outer space.
  

  Synonym:
  vacancy, vacuum, void
  

  source: wordnet30
• the quality of being valueless or futile(noun.attribute)

  Synonym:
  vanity
  

  source: wordnet30
• The state of being empty; absence of contents; void space; vacuum; as, the emptiness of a vessel; emptiness of the stomach.(noun)

  source: webster1913