noun (n)

• lack of depth of knowledge or thought or feeling(noun.attribute)

  Synonym:
  shallowness
  Antonym:
  profoundness, profundity
  

  source: wordnet30
• shallowness in terms of affecting only surface layers of something(noun.attribute)

  Example:
  He ignored the wound because of its superficiality.
  

  source: wordnet30
• The quality or state of being superficial; also, that which is superficial.(noun)

  source: webster1913