pretty vs quick on trigger

pretty

verb
  • To make pretty; to beautify 

noun
  • Something that is pretty. 

  • A pretty person; a term of address to a pretty person. 

adj
  • Cunning; clever, skilful. 

  • Fine-looking; only superficially attractive; initially appealing but having little substance; see petty. 

  • Of objects or things: nice-looking, appealing. 

  • Pleasant to the sight or other senses; attractive, especially of women or children. 

  • Awkward, unpleasant. 

adv
  • Somewhat, fairly, quite; sometimes also (by meiosis) very. 

  • Prettily, in a pretty manner. 

quick on trigger

How often have the words pretty and quick on trigger occurred in a corpus of books? (source: Google Ngram Viewer )