noun (n)

• the fraudulent appropriation of funds or property entrusted to your care but actually owned by someone else(noun.act)

  Synonym:
  defalcation, embezzlement, misapplication, peculation
  

  source: wordnet30
• wrongful borrowing(noun.act)

  Example:
  His explanation was a misappropriation of sociological theory.
  

  source: wordnet30
• Wrong appropriation; wrongful use.(noun)

  source: webster1913