doot vs propose

doot

verb
  • think 

  • to scan 

  • to tap a card 

  • doubt 

noun
  • doubt 

  • beep (electronically-produced tone) 

propose

verb
  • To intend. 

  • To ask for a person's hand in marriage. 

  • To suggest a plan, course of action, etc. 

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