insociable vs unsociable

insociable

adj
  • Not sociable or companionable. 

unsociable

adj
  • unfriendly 

  • not congenial or compatible 

  • not desiring the company of others 

noun
  • A person who is not sociable. 

How often have the words insociable and unsociable occurred in a corpus of books? (source: Google Ngram Viewer )