idiotlike vs wacko

idiotlike

adj

  • Characteristic of an idiot, resembling an idiot; foolish, idiotic, stupid. 

wacko

adj

  • Amusingly eccentric or irrational. 

noun

  • An amusingly eccentric or irrational person. 

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