dotty vs loopy

dotty

adj

  • Mildly insane or eccentric; often, senile. 

  • Having many dots. 

noun

  • A shotgun. 

loopy

adj

  • Idiotic, crazy. 

  • Drunk. 

  • Having loops. 

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