dis- vs syn-

dis-

prefix
  • incorrect 

  • Used as an intensifier of words with negative valence. 

  • not 

  • to fail (to) 

  • against 

  • reversal or removal 

syn-

prefix
  • concomitant 

  • with, together 

  • identical 

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