dilly vs smooth-brained

dilly

adj
  • Silly; characteristic of a dill. 

  • Redolent of dill (the herb). 

noun
  • Someone or something that is remarkable or unusual. 

  • A dilly bag. 

smooth-brained

adj
  • Stupid, foolish; ignorant. 

  • Lissencephalic; having a brain which lacks convolutions due to malformation. 

  • Having a brain which is naturally smooth in appearance. 

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