unfairly vs without prejudice

unfairly

adv
  • In a manner that is unfair. 

without prejudice

prep
  • Not affecting nor considering other possibly related issues. 

  • Without affecting a legal interest. 

  • A term used to allow a statement or proposal in communications, while allowing the party to return to their original position without being impeded by the described statement or proposal. 

How often have the words unfairly and without prejudice occurred in a corpus of books? (source: Google Ngram Viewer )