round the twist vs sociopathic

round the twist

prep

  • Eccentric. 

  • Mad. 

sociopathic

adj

  • Having the characteristics of a sociopath. 

  • Unconcerned about the adverse consequences of one's actions on others. 

noun

  • A sociopath. 

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