cockamamie vs idiotistic

cockamamie

adj

  • Foolish, ill-considered, silly, unbelievable. 

  • Trifling. 

noun

  • A foolish or ridiculous person. 

idiotistic

adj

  • Synonym of idiotic 

  • Specific to one idiolect. 

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